Reed Relays & Optocouplers | Introduction

Reed relays contain an electromagnetic coil and reed switch. When power is applied to the coil, the reed switch is activated. They are ideal for applications requiring low and stable contact resistance, low capacitance, high insulation resistance, long life and small package size. They are also suitable for high RF switching and low current switching. Reed Relay applications continue grow every year despite severe competition from other small switching devices such as semiconductors and electromechanical armature style relays. Because the contacts in a Reed Relay are hermetically sealed, the contacts can switch low level signals as low as femtoamps and nanovolts.Reed Relays are ideally used for switching applications requiring low and stable contact resistance, low capacitance, high insulation resistance, long life and small size. For specialty requirements such as high RF switching, very high voltage switching, extremely low voltage or low current switching, again Reed Relays are also ideal.The optocoupler is composed of two circuits: an input circuit and an output circuit. A light emitting diode (LED) is the key input component, where the key output component is a photo-detector. Passing a current of approximately 10 ma through the two input terminals and through the light emitting diode, with the correct polarity, converts the electrical current into photons. The photons are then directed down a light tube or tunnel. At the end of the tunnel, the photons are incident on the photo detector that converts the photons back to an electric current. In this manner, the input information is transferred and amplified in the output detection circuit without any direct electrical conducting path. The longer the light tube the greater the distance between the metalized input terminals to the metalized output terminals. This insures a greater insulation resistance and high voltage isolation.

3-8 poles N.O. (Form A) Reed Relays

3-8 poles N.O. (Form A) Reed Relays are reed relay products containing anywhere from 3 to 8 internal reed switches that have their contacts in the normally open state.

RM05-8A Reed Relay

8-pole low profile through hole mount (THT) high frequency (RF) RM05-8A Series Reed Relay module with one serial digital 8 bit input channel, to drive a double output matrix with 4 to 1 channels each. Equipped with an 8 bit shift register 74 HC(T)595 and new drivers. Designed to significantly reduce PCB space, saves on wiring costs, and assembly costs.

RM05-8A-S Reed Relay

Ultraminiature 8-pole low profile through hole mount (THT) high frequency (RF) RM05-8A-S Series Reed Relay module with standard dual in-line (DIL) pin-out (2mm raster). Equipped with an 8-channel relay driver with max 4823 kickback protection and parallel activation electronics. Designed to significantly reduce PCB space at 24% smaller than our RM05-8A, saves on wiring costs, and assembly costs. Gold plated leads offer improved solderability.

RM05-4-BV10641 Reed Relay

4-pole low profile surface mount (SMD) high frequency (RF) RM05-4-BV10641 Series Reed Relay module with integrated female plug-in socket (1.27mm) (0.05) pitch. This relay module has 4 separate output channels as well as integrated drive electronics for 5VDC and different switching matrices. Standard with ball grid array (BGA). Designed in an FR-4 substrate and rugged thermoset overmold body able to withstand reflow temperatures.

RM05-4A Reed Relay

4-pole low profile surface mount (SMD) high frequency (RF) RM05-4A Series Reed Relay module capable of switching beyond 5.5 GHz with

MRX Reed Relay

ATEX approved (PTB-01 ATEX 2050 U) MRX Series Reed Relay is used for the galvanic separation of intrinsic safety and non-intrinsic safety circuits. The MRX series is also suitable for circuits of the category “ia” due to its peak voltage of 375 Voltage. Switching configuration with up to 4 form A switches or 1 form C switch.

DIL Reed Relay

General purpose line sensing dual in-line DIL Series Reed Relay with coil up to 11.000 Ω. Supplied in an epoxy encapsulated package. Available with dielectric strength 4.25kVDC. Optional diode and magnetic shield. UL approval.

BE Reed Relay

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

ATEX Approved Reed Relays & Optocouplers

Often times electronic equipment is required to carry out certain functions in potentially explosive atmospheres. To prevent potential ignition of the explosive atmosphere via a spark or arc in these environments, all components must be selected very carefully. Components meeting these requirements are generally referred to as intrinsically safe. These components must be tested such that they will not become an ignition point when subjected to short circuits or adjacent component failures. They must also switch to a defined state when subjected to overload conditions. Our 522-03-i, 525-03-0-i, 535-04-0-i, and 567-70-i Optocoupler series are all ideal for this environment. Generally, intrinsically safe approved components are ideally suited in the mining industry, chemical processing plants, refineries, power stations and high dust producing plants. Any potentially flammable atmospheres represent areas of applications for these products. Standards for these components are presented in EN500200. The required air and creepage paths as well as the electric strength are defined in detail as follows: For voltage specification, a peak voltage of 375 Volts must not be exceeded in order to meet accepted worldwide standards. The sum of the input and output voltages must not be higher than 375 Volts Peak. The coil input has a voltage of 24 Volts max. and the contacts produce 230 VRMS or 325 volts peak output. Input plus output = 24 + 325 = 349 Volts peak. Here the safety margin for the voltage for the input and output meet their peak voltage limit of 375 volts. The air path for isolation of this voltage is 6mm and the creepage path is 10mm. The isolation inside the component through potting compounds is 2mm. Another important value is the Comparative Tracking index (CTI) value of plastic. In this case, the value must be greater than 175. The electric strength between the input and output is tested at 1500 VRMS or 2x the nominal voltage +1000

567 Series Optocouplers

567 Series Optocouplers for the galvanic separation of intrinsic safety (EXi) circuits, Isolation voltage min. 4kVDC, cutoff 500kHZ, ATEX Certified (11ATEX 0086, DIN EN 60062). Insulation resistance input /output up to 10^13 Ω. Distance between input and output for highest safety requirements up to 14mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

535 Series Optocouplers

535 Series Optocouplers for the galvanic separation of intrinsic safety (EXi) circuits, Isolation voltage min. 4kVDC, CTR min. 3.0, cutoff 2kHZ, ATEX Certified (11ATEX 0086, DIN EN 60062). Insulation resistance input /output up to 10^13 Ω. Distance between input and output for highest safety requirements up to 14.5mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

525 Series Optocouplers

525 Series Optocouplers for the galvanic separation of intrinsic safety (EXi) circuits, Isolation voltage min. 4kVDC, CTR min. 0.5, cutoff 50kHZ, ATEX Certified (11ATEX 0086, DIN EN 60062). Insulation resistance input /output up to 10^12 Ω. Distance between input and output for highest safety requirements up to 14.5mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

522 Series Optocouplers

Miniature 522 Series Optocouplers for the galvanic separation of intrinsic safety (EXi) circuits, Isolation voltage min. 4kVDC, CTR min. 0.5, cutoff 85kHZ, ATEX Certified (11ATEX 0086, DIN EN 60062). Insulation resistance input /output up to 10^12 Ω. Distance between input and output for highest safety requirements up to 12mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

MRX Reed Relay

ATEX approved (PTB-01 ATEX 2050 U) MRX Series Reed Relay is used for the galvanic separation of intrinsic safety and non-intrinsic safety circuits. The MRX series is also suitable for circuits of the category “ia” due to its peak voltage of 375 Voltage. Switching configuration with up to 4 form A switches or 1 form C switch.

DPDT Changeover (2 Form C) Reed Relays

SPDT Changeover (Form C) reed relay products are a changeover or single-pole double throw switch type where a normally closed contact opens before a normally open contact closes. They can also be used as a Form-B, normally-closed switch (N.C.).

RM05-8A-S Reed Relay

Ultraminiature 8-pole low profile through hole mount (THT) high frequency (RF) RM05-8A-S Series Reed Relay module with standard dual in-line (DIL) pin-out (2mm raster). Equipped with an 8-channel relay driver with max 4823 kickback protection and parallel activation electronics. Designed to significantly reduce PCB space at 24% smaller than our RM05-8A, saves on wiring costs, and assembly costs. Gold plated leads offer improved solderability.

DIL Reed Relay

General purpose line sensing dual in-line DIL Series Reed Relay with coil up to 11.000 Ω. Supplied in an epoxy encapsulated package. Available with dielectric strength 4.25kVDC. Optional diode and magnetic shield. UL approval.

BE Reed Relay

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

DPST-N.C. (2 Form B) Reed Relays

DPST-N.C. is a reed relay containing 2 internal reed switch components with their contact state in the normally closed position.

RM05-4A Reed Relay

4-pole low profile surface mount (SMD) high frequency (RF) RM05-4A Series Reed Relay module capable of switching beyond 5.5 GHz with

BE Reed Relay

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

DPST-N.O. (2 Form A) Reed Relays

DPST-N.O. is a reed relay containing 2 internal reed switch components with their contact state in the normally open position.

BT/BTS Reed Relay

Low thermal epoxy encapsulated BT/BTS Series Reed Relay capable of switching offset voltages <1µV with a 100% duty cycle. This extremely low thermal voltage is achieved through an optimized temperature balance between the reed switches and minimum coil power. An excellent choice over semiconductor devices.

HE Reed Relay

The HE Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC. Leakage distance >26mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

HF Reed Relay

High frequency/high power HF Series Reed Relay with carry current capability 5A@30MHz. Specially packaged coil with a PCB pin out for the coil only. The switch contacts are available for direct wiring (sky wiring). Equipped with a patented external electrostatic and magnetic shield. Breakdown voltage up to 9kVDC.

DIP Reed Relay

General purpose dual in-line (DIL) IC compatible DIP Series Reed Relay supplied in a rugged thermoset overmolded package. Available with dielectric strength 4.25kVDC. Optional diode. UL approval.

DIL Reed Relay

General purpose line sensing dual in-line DIL Series Reed Relay with coil up to 11.000 Ω. Supplied in an epoxy encapsulated package. Available with dielectric strength 4.25kVDC. Optional diode and magnetic shield. UL approval.

BE Reed Relay

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

DPST-N.O. (2 Form A) Reed Relays + DPST-N.C. (2 Form B) Reed Relays

A reed relay containing 2 internal reed switch components with their contact state in the normally open position and 2 internal reed switches in the normally closed contact position.

RM05-4A Reed Relay

4-pole low profile surface mount (SMD) high frequency (RF) RM05-4A Series Reed Relay module capable of switching beyond 5.5 GHz with

BE Reed Relay

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

General Purpose Reed Relays

The BE, DIL, DIP, MS, NP, SIL and UMS are the most popular surface mount (SMD) reed relays for general purpose use including but limited to automated test equipment, medical equipment, industrial applications, telecommunications, etc.

SIL Reed Relay

General purpose instrumentation grade single in-line SIL Series Reed Relay is supplied in a rugged thermoset overmolded package. Utilizes minimum PCB area at only 50% compared to our DIP and DIL series. Available with dielectric strength 4kVDC. Optional diode and magnetic shield. UL approval.

MS Reed Relay

General purpose micro single in-line (SIL) MS Series Reed Relay with rugged thermoset overmolded package has a standard internal magnetic shield. This instrumentation grade relay can be stacked in close matrices. Available in high frequency version up to 1GHz. Optional diode. UL approval.

DIP Reed Relay

General purpose dual in-line (DIL) IC compatible DIP Series Reed Relay supplied in a rugged thermoset overmolded package. Available with dielectric strength 4.25kVDC. Optional diode. UL approval.

DIL Reed Relay

General purpose line sensing dual in-line DIL Series Reed Relay with coil up to 11.000 Ω. Supplied in an epoxy encapsulated package. Available with dielectric strength 4.25kVDC. Optional diode and magnetic shield. UL approval.

BE Reed Relay

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

High Frequency Reed Relays

High frequency reed relay products are capable of switching signals from DC up to 7 GHz, attained by keeping the signal path as short as possible and using an internal coaxial shield with a consistent 50 Ohm impedance path. Not only is it excellent with RF signals, but is also great for digital signals where the skew rates or effects on the rise time of fast digital pulses is less than 40 picoseconds through the relay. Internal magnetic shield prevents any magnetic coupling effects between relays when designing a two dimensional or three dimensional relay matrix. The reed relays have a flat frequency response out to 20 GHz. Their cost is moderate and stable. Their size is becoming smaller and smaller.

RM05-4-BV10641 Reed Relay

4-pole low profile surface mount (SMD) high frequency (RF) RM05-4-BV10641 Series Reed Relay module with integrated female plug-in socket (1.27mm) (0.05) pitch. This relay module has 4 separate output channels as well as integrated drive electronics for 5VDC and different switching matrices. Standard with ball grid array (BGA). Designed in an FR-4 substrate and rugged thermoset overmold body able to withstand reflow temperatures.

RM05-4A Reed Relay

4-pole low profile surface mount (SMD) high frequency (RF) RM05-4A Series Reed Relay module capable of switching beyond 5.5 GHz with

SILRF Reed Relay

High frequency single in-line SIL RF Series Reed Relay capable of switching signals from DC to 1.5GHz. Instrumentation grade relay is supplied in a rugged thermoset overmolded package. Utilizes minimum PCB area at only 50% compared to our DIP and DIL series. Available with dielectric strength 4kVDC. Optional diode and magnetic shield. UL approval.

HF Reed Relay

High frequency/high power HF Series Reed Relay with carry current capability 5A@30MHz. Specially packaged coil with a PCB pin out for the coil only. The switch contacts are available for direct wiring (sky wiring). Equipped with a patented external electrostatic and magnetic shield. Breakdown voltage up to 9kVDC.

CRF Reed Relay

Ultraminiature 7GHz high frequency (RF) surface mount (SMD) low-profile CRF Series Reed Relay with high insulation resistance (IR) typical 10^13 Ω. Instrumentation grade relay comes in a rugged thermoset overmolded package with ceramic substrate. Supplied in tape and reel according to IEC 286/part 3. Ball grid array (BGA) optional. UL approval.

High Insulation Reed Relays

High insulation reed relay products are typically characterized by having an insulation resistance (IR) of >10^13 Ω measured from input to output or across the contacts with a low dielectric constant.t.

HI Reed Relay

High voltage/high insulation open-frame HI Series Reed Relay with high leakage distance. High Insulation Resistance (IR) >10^14 Ω.

LI Reed Relay

The LI series is a high voltage reed relay and high insulation reed relay that is epoxy encapsulated. This high voltage reed relay features a high insulation resistance (IR) >10^13 Ω and is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC. UL approval.

KT Reed Relay

The KT series high voltage reed relay and high insulation reed relay is available in both a surface mount (SMD) or through-hole (THT) design. This high voltage reed relay is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC and features a high insulation resistance (IR) >10^13 Ω. This KT series is supplied in a rugged thermoset overmolded package. AEC-Q200 certified, UL approval.

CRF Reed Relay

Ultraminiature 7GHz high frequency (RF) surface mount (SMD) low-profile CRF Series Reed Relay with high insulation resistance (IR) typical 10^13 Ω. Instrumentation grade relay comes in a rugged thermoset overmolded package with ceramic substrate. Supplied in tape and reel according to IEC 286/part 3. Ball grid array (BGA) optional. UL approval.

CRR Reed Relay

Ultraminiature surface mount (SMD) low-profile CRR Series Reed Relay with high insulation resistance (IR) typical 10^13 Ω. Instrumentation grade relay comes in a rugged thermoset overmolded package with ceramic substrate. Supplied in tape and reel according to IEC 286/part 3. Ball grid array (BGA) optional. UL approval.

BE Reed Relay

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

High Voltage Reed Relays

High voltage reed relays are reed relays used for switching high voltage applications in photovoltaic systems, medical, industrial, telecommunications, and (ATE) automated test equipment markets. High voltage reed relay products are capable of switching up to 10,000 VDC and breakdown voltages to 15,000 VDC as well as continuous carry currents up to 15 Amps and pulsed currents to 30 Amps. Our high voltage relays come in a variety of high voltage switching options and package sizes in PCB mount and free-standing applications with optional direct wiring leads.  High voltage reed relays are ideal in radio transmitters 1 MHz to 30MHz, communication equipment, antenna transmitter and receive applications, cable test equipment, defibrillators, electrosurgical generators used with an electronic scalpel for electrocauterization, replacement of mercury wetted relays, automated test equipment, and much more.

SILHV Reed Relay

The SIL HV single in-line series is a high voltage reed relay and instrumentation grade reed relay supplied in an epoxy encapsulated package capable of switching up to 1kVDC and breakdown voltage of 4kVDC. This high voltage reed relay series features an insulation resistance >5 x 10^12 Ω and utilizes minimum PCB area, at only 50% compared to our DIP and DIL reed relay series.

LI Reed Relay

The LI series is a high voltage reed relay and high insulation reed relay that is epoxy encapsulated. This high voltage reed relay features a high insulation resistance (IR) >10^13 Ω and is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC. UL approval.

KT Reed Relay

The KT series high voltage reed relay and high insulation reed relay is available in both a surface mount (SMD) or through-hole (THT) design. This high voltage reed relay is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC and features a high insulation resistance (IR) >10^13 Ω. This KT series is supplied in a rugged thermoset overmolded package. AEC-Q200 certified, UL approval.

HM Reed Relay

The HM Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC with a leakage distance >32mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

HE Reed Relay

The HE Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC. Leakage distance >26mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

H Reed Relay

The H Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC. This high voltage reed relay is designed with a specially packaged coil with a PCB pin out for the coil only. The switch contacts are available for direct wiring (sky wiring). Replacement for mercury wetted relay.

Latching / Bistable (1 Form E) Reed Relays

A latching reed relay or bistable reed relay contains one or more reed switches with (Form E) contacts which are magnetically biased and can exist in either the normally open (N.O.) or normally closed (N.C.) state which is controlled by reversing the magnetic field. Bistable reed relays are used in applications calling for extremely small power requirements, particularly in battery powered devices.

HM Reed Relay

The HM Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC with a leakage distance >32mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

Low Thermal Reed Relays

A low thermal reed relay is used to switch low voltages in the low microsecond (µV) range and not alter the signal level in any way after it has passed through the relay. Low thermal or low offset reed relays are used in applications where transducers are used that produce very low voltage signals that need to be switched and amplified. They are also used on the front end of high end multimeters and switching thermocouples in data acquisition systems as well as temperature measuring, data logging and measurement applications.

BT/BTS Reed Relay

Low thermal epoxy encapsulated BT/BTS Series Reed Relay capable of switching offset voltages <1µV with a 100% duty cycle. This extremely low thermal voltage is achieved through an optimized temperature balance between the reed switches and minimum coil power. An excellent choice over semiconductor devices.

Optocoupler

Optocouplers are composed of two circuits: an input circuit and an output circuit. A light emitting diode (LED) is the key input component, where the key output component is a photo-detector. Passing a current of approximately 10 ma through the two input terminals and through the light emitting diode, with the correct polarity, converts the electrical current into photons. The photons are then directed down a light tube or tunnel. At the end of the tunnel, the photons are incident on the photo detector that converts the photons back to an electric current. In this manner, the input information is transferred and amplified in the output detection circuit without any direct electrical conducting path. The longer the light tube the greater the distance between the metalized input terminals to the metalized output terminals. This insures a greater insulation resistance and high voltage isolation. Optocouplers handle hazardous environments and meet ATEX intrinsic safety requirements. Our line of optocouplers can safely handle input/output isolation as high as 20,000 VDC that have met and been certified for the stringent requirements of ATEX (Directive 94/9/EC and 1999/92/EC). This directive applies to equipment and protective systems that are used in factories where potentially explosive atmospheres exist such as in mining operations, flammable gas processing plants, some medical processing plants where ESD could be a real problem, and in any factory that requires high isolation and non-arcing environments.

567 Series Optocouplers

567 Series Optocouplers for the galvanic separation of intrinsic safety (EXi) circuits, Isolation voltage min. 4kVDC, cutoff 500kHZ, ATEX Certified (11ATEX 0086, DIN EN 60062). Insulation resistance input /output up to 10^13 Ω. Distance between input and output for highest safety requirements up to 14mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

535 Series Optocouplers

535 Series Optocouplers for the galvanic separation of intrinsic safety (EXi) circuits, Isolation voltage min. 4kVDC, CTR min. 3.0, cutoff 2kHZ, ATEX Certified (11ATEX 0086, DIN EN 60062). Insulation resistance input /output up to 10^13 Ω. Distance between input and output for highest safety requirements up to 14.5mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

530 Series Optocouplers

530 Series Optocouplers for the galvanic separation of intrinsic safety circuits, Isolation voltage min. 20kVDC, CTR min. 0.5, cutoff 50kHZ. Insulation resistance input /output up to 10^12 Ω. Distance between input and output for highest safety requirements up to 32mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

528 Series Optocouplers

528 Series Optocouplers for the galvanic separation of intrinsic safety circuits, Isolation voltage min. 10kVDC, CTR min. 0.9, cutoff 50kHZ. Insulation resistance input /output up to 10^12 Ω. Distance between input and output for highest safety requirements up to 42mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

525 Series Optocouplers

525 Series Optocouplers for the galvanic separation of intrinsic safety (EXi) circuits, Isolation voltage min. 4kVDC, CTR min. 0.5, cutoff 50kHZ, ATEX Certified (11ATEX 0086, DIN EN 60062). Insulation resistance input /output up to 10^12 Ω. Distance between input and output for highest safety requirements up to 14.5mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

522 Series Optocouplers

Miniature 522 Series Optocouplers for the galvanic separation of intrinsic safety (EXi) circuits, Isolation voltage min. 4kVDC, CTR min. 0.5, cutoff 85kHZ, ATEX Certified (11ATEX 0086, DIN EN 60062). Insulation resistance input /output up to 10^12 Ω. Distance between input and output for highest safety requirements up to 12mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

521 Series Optocouplers

521 Series Optocouplers for the galvanic separation of intrinsic safety circuits, Isolation voltage min. 6kVDC, CTR min. 0.5, cutoff 50kHZ. Insulation resistance input /output up to 10^13 Ω. Distance between input and output for highest safety requirements up to 24.5mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

Relay Module

Relay modules have various input/output configurations and are designed in either a low-profile surface mount (SMD) package or high package through-hole or plug-in design. They feature multiple switching configurations ranging from 4-pole up to 8-pole (2C Matrix).

RM05-8A Reed Relay

8-pole low profile through hole mount (THT) high frequency (RF) RM05-8A Series Reed Relay module with one serial digital 8 bit input channel, to drive a double output matrix with 4 to 1 channels each. Equipped with an 8 bit shift register 74 HC(T)595 and new drivers. Designed to significantly reduce PCB space, saves on wiring costs, and assembly costs.

RM05-8A-S Reed Relay

Ultraminiature 8-pole low profile through hole mount (THT) high frequency (RF) RM05-8A-S Series Reed Relay module with standard dual in-line (DIL) pin-out (2mm raster). Equipped with an 8-channel relay driver with max 4823 kickback protection and parallel activation electronics. Designed to significantly reduce PCB space at 24% smaller than our RM05-8A, saves on wiring costs, and assembly costs. Gold plated leads offer improved solderability.

RM05-4-BV10641 Reed Relay

4-pole low profile surface mount (SMD) high frequency (RF) RM05-4-BV10641 Series Reed Relay module with integrated female plug-in socket (1.27mm) (0.05) pitch. This relay module has 4 separate output channels as well as integrated drive electronics for 5VDC and different switching matrices. Standard with ball grid array (BGA). Designed in an FR-4 substrate and rugged thermoset overmold body able to withstand reflow temperatures.

RM05-4A Reed Relay

4-pole low profile surface mount (SMD) high frequency (RF) RM05-4A Series Reed Relay module capable of switching beyond 5.5 GHz with

SPDT Changeover (1 Form C) Reed Relays

Changeover reed relays can contain one or more internal (Form C) reed switches or single pole double throw SPDT reed switches.  The changeover reed switch is hermetically sealed with 3 leads: a common lead, a normally open lead, and a normally closed lead. When operated the reed switch common contact will swing from the normally closed contact to the normally open contact. This is caused by the magnetic field produced by a coil or the magnetic field from a magnet.  When the magnetic field is removed the common contact will revert back and come to rest on the normally closed contact.

MRX Reed Relay

ATEX approved (PTB-01 ATEX 2050 U) MRX Series Reed Relay is used for the galvanic separation of intrinsic safety and non-intrinsic safety circuits. The MRX series is also suitable for circuits of the category “ia” due to its peak voltage of 375 Voltage. Switching configuration with up to 4 form A switches or 1 form C switch.

SIL Reed Relay

General purpose instrumentation grade single in-line SIL Series Reed Relay is supplied in a rugged thermoset overmolded package. Utilizes minimum PCB area at only 50% compared to our DIP and DIL series. Available with dielectric strength 4kVDC. Optional diode and magnetic shield. UL approval.

DIP Reed Relay

General purpose dual in-line (DIL) IC compatible DIP Series Reed Relay supplied in a rugged thermoset overmolded package. Available with dielectric strength 4.25kVDC. Optional diode. UL approval.

DIL Reed Relay

General purpose line sensing dual in-line DIL Series Reed Relay with coil up to 11.000 Ω. Supplied in an epoxy encapsulated package. Available with dielectric strength 4.25kVDC. Optional diode and magnetic shield. UL approval.

SPST-N.C. (1 Form B) Reed Relays

SPST-N.C. (1 Form B) Reed Relays contain a single internal reed switch that is a single pole single throw type switch that has it's contacts in the normally closed (Form B) position before any magnetic field is applied.

HM Reed Relay

The HM Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC with a leakage distance >32mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

HE Reed Relay

The HE Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC. Leakage distance >26mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

H Reed Relay

The H Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC. This high voltage reed relay is designed with a specially packaged coil with a PCB pin out for the coil only. The switch contacts are available for direct wiring (sky wiring). Replacement for mercury wetted relay.

HF Reed Relay

High frequency/high power HF Series Reed Relay with carry current capability 5A@30MHz. Specially packaged coil with a PCB pin out for the coil only. The switch contacts are available for direct wiring (sky wiring). Equipped with a patented external electrostatic and magnetic shield. Breakdown voltage up to 9kVDC.

CRF Reed Relay

Ultraminiature 7GHz high frequency (RF) surface mount (SMD) low-profile CRF Series Reed Relay with high insulation resistance (IR) typical 10^13 Ω. Instrumentation grade relay comes in a rugged thermoset overmolded package with ceramic substrate. Supplied in tape and reel according to IEC 286/part 3. Ball grid array (BGA) optional. UL approval.

UMS Reed Relay

Ultraminiature instrumentation grade single in-line (SIL) UMS Series Reed Relay used in very closely stacked matrices. Measure nearly 50% smaller than the standard MS series reed relay. Contains and internal magnetic shield. UL approval, AEC-Q200 certified.

SIL Reed Relay

General purpose instrumentation grade single in-line SIL Series Reed Relay is supplied in a rugged thermoset overmolded package. Utilizes minimum PCB area at only 50% compared to our DIP and DIL series. Available with dielectric strength 4kVDC. Optional diode and magnetic shield. UL approval.

MS Reed Relay

General purpose micro single in-line (SIL) MS Series Reed Relay with rugged thermoset overmolded package has a standard internal magnetic shield. This instrumentation grade relay can be stacked in close matrices. Available in high frequency version up to 1GHz. Optional diode. UL approval.

DIP Reed Relay

General purpose dual in-line (DIL) IC compatible DIP Series Reed Relay supplied in a rugged thermoset overmolded package. Available with dielectric strength 4.25kVDC. Optional diode. UL approval.

DIL Reed Relay

General purpose line sensing dual in-line DIL Series Reed Relay with coil up to 11.000 Ω. Supplied in an epoxy encapsulated package. Available with dielectric strength 4.25kVDC. Optional diode and magnetic shield. UL approval.

CRR Reed Relay

Ultraminiature surface mount (SMD) low-profile CRR Series Reed Relay with high insulation resistance (IR) typical 10^13 Ω. Instrumentation grade relay comes in a rugged thermoset overmolded package with ceramic substrate. Supplied in tape and reel according to IEC 286/part 3. Ball grid array (BGA) optional. UL approval.

SPST-N.O. (1 Form A) Reed Relays

SPST-N.O. (1 Form A) Reed Relays contain a single internal reed switch that is a single pole single throw type switch that has it's contacts in the normally open (Form A) position before any magnetic field is applied.  They draw zero power in this state.

MRX Reed Relay

ATEX approved (PTB-01 ATEX 2050 U) MRX Series Reed Relay is used for the galvanic separation of intrinsic safety and non-intrinsic safety circuits. The MRX series is also suitable for circuits of the category “ia” due to its peak voltage of 375 Voltage. Switching configuration with up to 4 form A switches or 1 form C switch.

HI Reed Relay

High voltage/high insulation open-frame HI Series Reed Relay with high leakage distance. High Insulation Resistance (IR) >10^14 Ω.

SILHV Reed Relay

The SIL HV single in-line series is a high voltage reed relay and instrumentation grade reed relay supplied in an epoxy encapsulated package capable of switching up to 1kVDC and breakdown voltage of 4kVDC. This high voltage reed relay series features an insulation resistance >5 x 10^12 Ω and utilizes minimum PCB area, at only 50% compared to our DIP and DIL reed relay series.

LI Reed Relay

The LI series is a high voltage reed relay and high insulation reed relay that is epoxy encapsulated. This high voltage reed relay features a high insulation resistance (IR) >10^13 Ω and is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC. UL approval.

KT Reed Relay

The KT series high voltage reed relay and high insulation reed relay is available in both a surface mount (SMD) or through-hole (THT) design. This high voltage reed relay is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC and features a high insulation resistance (IR) >10^13 Ω. This KT series is supplied in a rugged thermoset overmolded package. AEC-Q200 certified, UL approval.

HM Reed Relay

The HM Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC with a leakage distance >32mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

HE Reed Relay

The HE Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC. Leakage distance >26mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

H Reed Relay

The H Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC. This high voltage reed relay is designed with a specially packaged coil with a PCB pin out for the coil only. The switch contacts are available for direct wiring (sky wiring). Replacement for mercury wetted relay.

SILRF Reed Relay

High frequency single in-line SIL RF Series Reed Relay capable of switching signals from DC to 1.5GHz. Instrumentation grade relay is supplied in a rugged thermoset overmolded package. Utilizes minimum PCB area at only 50% compared to our DIP and DIL series. Available with dielectric strength 4kVDC. Optional diode and magnetic shield. UL approval.

HF Reed Relay

High frequency/high power HF Series Reed Relay with carry current capability 5A@30MHz. Specially packaged coil with a PCB pin out for the coil only. The switch contacts are available for direct wiring (sky wiring). Equipped with a patented external electrostatic and magnetic shield. Breakdown voltage up to 9kVDC.

CRF Reed Relay

Ultraminiature 7GHz high frequency (RF) surface mount (SMD) low-profile CRF Series Reed Relay with high insulation resistance (IR) typical 10^13 Ω. Instrumentation grade relay comes in a rugged thermoset overmolded package with ceramic substrate. Supplied in tape and reel according to IEC 286/part 3. Ball grid array (BGA) optional. UL approval.

UMS Reed Relay

Ultraminiature instrumentation grade single in-line (SIL) UMS Series Reed Relay used in very closely stacked matrices. Measure nearly 50% smaller than the standard MS series reed relay. Contains and internal magnetic shield. UL approval, AEC-Q200 certified.

SIL Reed Relay

General purpose instrumentation grade single in-line SIL Series Reed Relay is supplied in a rugged thermoset overmolded package. Utilizes minimum PCB area at only 50% compared to our DIP and DIL series. Available with dielectric strength 4kVDC. Optional diode and magnetic shield. UL approval.

MS Reed Relay

General purpose micro single in-line (SIL) MS Series Reed Relay with rugged thermoset overmolded package has a standard internal magnetic shield. This instrumentation grade relay can be stacked in close matrices. Available in high frequency version up to 1GHz. Optional diode. UL approval.

DIP Reed Relay

General purpose dual in-line (DIL) IC compatible DIP Series Reed Relay supplied in a rugged thermoset overmolded package. Available with dielectric strength 4.25kVDC. Optional diode. UL approval.

DIL Reed Relay

General purpose line sensing dual in-line DIL Series Reed Relay with coil up to 11.000 Ω. Supplied in an epoxy encapsulated package. Available with dielectric strength 4.25kVDC. Optional diode and magnetic shield. UL approval.

CRR Reed Relay

Ultraminiature surface mount (SMD) low-profile CRR Series Reed Relay with high insulation resistance (IR) typical 10^13 Ω. Instrumentation grade relay comes in a rugged thermoset overmolded package with ceramic substrate. Supplied in tape and reel according to IEC 286/part 3. Ball grid array (BGA) optional. UL approval.

BE Reed Relay

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

Surface Mount (SMD) Reed Relays

Surface mount reed relay designs are simpler and generally have fewer internal components. They are generally smaller, allowing them to take up less board space while meeting the critical board space cost aspects. In modern printed circuit board (PCB) manufacturing facilities surface mounting technology has become the dominant approach for component assemblies. Choose from high voltage, high frequency and relay modules low-profile over-molded reed relays, available with or without BGA (Ball Grid Arrays) and suitable for pick and place and surface mount soldering.

RM05-4-BV10641 Reed Relay

4-pole low profile surface mount (SMD) high frequency (RF) RM05-4-BV10641 Series Reed Relay module with integrated female plug-in socket (1.27mm) (0.05) pitch. This relay module has 4 separate output channels as well as integrated drive electronics for 5VDC and different switching matrices. Standard with ball grid array (BGA). Designed in an FR-4 substrate and rugged thermoset overmold body able to withstand reflow temperatures.

RM05-4A Reed Relay

4-pole low profile surface mount (SMD) high frequency (RF) RM05-4A Series Reed Relay module capable of switching beyond 5.5 GHz with

KT Reed Relay

The KT series high voltage reed relay and high insulation reed relay is available in both a surface mount (SMD) or through-hole (THT) design. This high voltage reed relay is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC and features a high insulation resistance (IR) >10^13 Ω. This KT series is supplied in a rugged thermoset overmolded package. AEC-Q200 certified, UL approval.

CRF Reed Relay

Ultraminiature 7GHz high frequency (RF) surface mount (SMD) low-profile CRF Series Reed Relay with high insulation resistance (IR) typical 10^13 Ω. Instrumentation grade relay comes in a rugged thermoset overmolded package with ceramic substrate. Supplied in tape and reel according to IEC 286/part 3. Ball grid array (BGA) optional. UL approval.

CRR Reed Relay

Ultraminiature surface mount (SMD) low-profile CRR Series Reed Relay with high insulation resistance (IR) typical 10^13 Ω. Instrumentation grade relay comes in a rugged thermoset overmolded package with ceramic substrate. Supplied in tape and reel according to IEC 286/part 3. Ball grid array (BGA) optional. UL approval.

Through Hole (THT) Reed Relays

Through hole (THT) reed relay products are epoxy encapsulated reed relays designed for through hole mounting on a printed circuit board (PCB).

RM05-8A Reed Relay

8-pole low profile through hole mount (THT) high frequency (RF) RM05-8A Series Reed Relay module with one serial digital 8 bit input channel, to drive a double output matrix with 4 to 1 channels each. Equipped with an 8 bit shift register 74 HC(T)595 and new drivers. Designed to significantly reduce PCB space, saves on wiring costs, and assembly costs.

RM05-8A-S Reed Relay

Ultraminiature 8-pole low profile through hole mount (THT) high frequency (RF) RM05-8A-S Series Reed Relay module with standard dual in-line (DIL) pin-out (2mm raster). Equipped with an 8-channel relay driver with max 4823 kickback protection and parallel activation electronics. Designed to significantly reduce PCB space at 24% smaller than our RM05-8A, saves on wiring costs, and assembly costs. Gold plated leads offer improved solderability.

MRX Reed Relay

ATEX approved (PTB-01 ATEX 2050 U) MRX Series Reed Relay is used for the galvanic separation of intrinsic safety and non-intrinsic safety circuits. The MRX series is also suitable for circuits of the category “ia” due to its peak voltage of 375 Voltage. Switching configuration with up to 4 form A switches or 1 form C switch.

BT/BTS Reed Relay

Low thermal epoxy encapsulated BT/BTS Series Reed Relay capable of switching offset voltages <1µV with a 100% duty cycle. This extremely low thermal voltage is achieved through an optimized temperature balance between the reed switches and minimum coil power. An excellent choice over semiconductor devices.

SILHV Reed Relay

The SIL HV single in-line series is a high voltage reed relay and instrumentation grade reed relay supplied in an epoxy encapsulated package capable of switching up to 1kVDC and breakdown voltage of 4kVDC. This high voltage reed relay series features an insulation resistance >5 x 10^12 Ω and utilizes minimum PCB area, at only 50% compared to our DIP and DIL reed relay series.

LI Reed Relay

The LI series is a high voltage reed relay and high insulation reed relay that is epoxy encapsulated. This high voltage reed relay features a high insulation resistance (IR) >10^13 Ω and is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC. UL approval.

KT Reed Relay

The KT series high voltage reed relay and high insulation reed relay is available in both a surface mount (SMD) or through-hole (THT) design. This high voltage reed relay is capable of switching up to 1kVDC, breakdown voltage of 4.2kVDC, isolation voltage to 7kVDC and features a high insulation resistance (IR) >10^13 Ω. This KT series is supplied in a rugged thermoset overmolded package. AEC-Q200 certified, UL approval.

HM Reed Relay

The HM Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC with a leakage distance >32mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

HE Reed Relay

The HE Series high voltage reed relay is capable of switching up to 10kVDC and breakdown voltage of 15kVDC. Leakage distance >26mm. This high voltage reed relay is epoxy encapsulated with many PCB pin configurations available. Options include high voltage wires available for direct wiring of the high voltage leads. Replacement for mercury wetted relay. Latching version also available.

SILRF Reed Relay

High frequency single in-line SIL RF Series Reed Relay capable of switching signals from DC to 1.5GHz. Instrumentation grade relay is supplied in a rugged thermoset overmolded package. Utilizes minimum PCB area at only 50% compared to our DIP and DIL series. Available with dielectric strength 4kVDC. Optional diode and magnetic shield. UL approval.

UMS Reed Relay

Ultraminiature instrumentation grade single in-line (SIL) UMS Series Reed Relay used in very closely stacked matrices. Measure nearly 50% smaller than the standard MS series reed relay. Contains and internal magnetic shield. UL approval, AEC-Q200 certified.

SIL Reed Relay

General purpose instrumentation grade single in-line SIL Series Reed Relay is supplied in a rugged thermoset overmolded package. Utilizes minimum PCB area at only 50% compared to our DIP and DIL series. Available with dielectric strength 4kVDC. Optional diode and magnetic shield. UL approval.

MS Reed Relay

General purpose micro single in-line (SIL) MS Series Reed Relay with rugged thermoset overmolded package has a standard internal magnetic shield. This instrumentation grade relay can be stacked in close matrices. Available in high frequency version up to 1GHz. Optional diode. UL approval.

DIP Reed Relay

General purpose dual in-line (DIL) IC compatible DIP Series Reed Relay supplied in a rugged thermoset overmolded package. Available with dielectric strength 4.25kVDC. Optional diode. UL approval.

DIL Reed Relay

General purpose line sensing dual in-line DIL Series Reed Relay with coil up to 11.000 Ω. Supplied in an epoxy encapsulated package. Available with dielectric strength 4.25kVDC. Optional diode and magnetic shield. UL approval.

BE Reed Relay

Our most versatile general purpose BE Series Reed Relay with many contact configuration options including up to 5 form A switches. Available in latching or high IR typical 10^14 Ω. Plastic or metal housing, epoxy encapsulated.

Ultraminiature Reed Relays

Ultraminiature reed relay products are some of the smallest relays currently available in the world with a body length ranging from 8mm and below. Some of the smallest surface mount (SMD) relays in the industry, the CRR & CRF series is only 3.4 mm high, making it ideal for very low profile environments and automatic pick and place.

CRF Reed Relay

Ultraminiature 7GHz high frequency (RF) surface mount (SMD) low-profile CRF Series Reed Relay with high insulation resistance (IR) typical 10^13 Ω. Instrumentation grade relay comes in a rugged thermoset overmolded package with ceramic substrate. Supplied in tape and reel according to IEC 286/part 3. Ball grid array (BGA) optional. UL approval.

UMS Reed Relay

Ultraminiature instrumentation grade single in-line (SIL) UMS Series Reed Relay used in very closely stacked matrices. Measure nearly 50% smaller than the standard MS series reed relay. Contains and internal magnetic shield. UL approval, AEC-Q200 certified.

CRR Reed Relay

Ultraminiature surface mount (SMD) low-profile CRR Series Reed Relay with high insulation resistance (IR) typical 10^13 Ω. Instrumentation grade relay comes in a rugged thermoset overmolded package with ceramic substrate. Supplied in tape and reel according to IEC 286/part 3. Ball grid array (BGA) optional. UL approval.

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