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KT Series Reed Relay

Description

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 4.5kVDC, 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. Tested in accordance with AEC-Q200, UL listed.

UL Certificate of Compliance

Specifications

Coil Voltage (VDC)5, 12, 24
Coil Resistance (Ω)65-1800
Contact Form1A (SPST) Normally Open (N.O.)
Rated Power Max.100W/1000VDC/1A

Applications

Automated test equipment (ATE), battery powered devices, general purpose electronic test equipment, medical equipment, photovoltaics, portable defibrillators, replacement of mercury wetted relays, telecommunications

Series Data Sheet (PDF)
 
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Stock Check

Item No.DatasheetDistributorRegionQuantityCartRFQInventory Date
KTStandex FactoryAmericas0 RFQ2025-07-14
KT05-1A-40L-SMD Digi-Key ElectronicsAmericas4,742 BUY RFQ2025-07-14
KT05-1A-40L-THT Digi-Key ElectronicsAmericas1,768 BUY RFQ2025-07-14
KT12-1A-40L-SMD Digi-Key ElectronicsAmericas1,274 BUY RFQ2025-07-14
KT12-1A-40L-THT Digi-Key ElectronicsAmericas3,605 BUY RFQ2025-07-14
KT24-1A-40L-SMD Digi-Key ElectronicsAmericas226 BUY RFQ2025-07-14
KT24-1A-40L-THT Digi-Key ElectronicsAmericas922 BUY RFQ2025-07-14
KT11B0SAM33Mouser ElectronicsAmericas0 RFQ2025-07-14
KT11P2SA2M33Mouser ElectronicsAmericas0 RFQ2025-07-14
KT11P3SA1M33Mouser ElectronicsAmericas0 RFQ2025-07-14
KT11B0SAM35LFGMouser ElectronicsAmericas0 RFQ2025-07-14
KT11P3SM34LFS (CUT REEL)Mouser ElectronicsAmericas0 RFQ2025-07-14
KT11S2A2M35LFGMouser ElectronicsAmericas0 RFQ2025-07-14
KT11B1SAMMouser ElectronicsAmericas0 RFQ2025-07-14
KT1193CMMouser ElectronicsAmericas0 RFQ2025-07-14
KT11B1SM LFTMouser ElectronicsAmericas0 RFQ2025-07-14
KT11P2SA1M LFTMouser ElectronicsAmericas0 RFQ2025-07-14
KT11P2SAM LFTMouser ElectronicsAmericas0 RFQ2025-07-14
KT11P3CM LFTMouser ElectronicsAmericas0 RFQ2025-07-14
KT203J2Mouser ElectronicsAmericas105 BUY RFQ2025-07-14
KT502J2Mouser ElectronicsAmericas0 RFQ2025-07-14
KT503J2Mouser ElectronicsAmericas0 RFQ2025-07-14
KT11P4JM34LFSMouser ElectronicsAmericas101 BUY RFQ2025-07-14
KT24-1A-40L-THT Mouser ElectronicsAmericas1,215 BUY RFQ2025-07-14
KT11P4SAM34LFSMouser ElectronicsAmericas0 RFQ2025-07-14
KT11P3SM LFTMouser ElectronicsAmericas0 RFQ2025-07-14
KT11P4SA1M LFTMouser ElectronicsAmericas0 RFQ2025-07-14
KT11B2SAM33Mouser ElectronicsAmericas0 RFQ2025-07-14
KT11P2SA3M33Mouser ElectronicsAmericas0 RFQ2025-07-14
KT11P3SA3M33Mouser ElectronicsAmericas0 RFQ2025-07-14
KT11P4SA2M33Mouser ElectronicsAmericas0 RFQ2025-07-14
KT11B1SMMouser ElectronicsAmericas0 RFQ2025-07-14
KT11P4SAMMouser ElectronicsAmericas0 RFQ2025-07-14
KT11P2SA2M31Mouser ElectronicsAmericas0 RFQ2025-07-14
KT11P3SA1M31Mouser ElectronicsAmericas0 RFQ2025-07-14
KT11P4SA3M33Mouser ElectronicsAmericas0 RFQ2025-07-14
KT11S1SA2M33Mouser ElectronicsAmericas0 RFQ2025-07-14
KT11S2SA2M33Mouser ElectronicsAmericas0 RFQ2025-07-14
KT11P3SA1MMouser ElectronicsAmericas0 RFQ2025-07-14
KT11P2SA2MMouser ElectronicsAmericas0 RFQ2025-07-14
KT11B2SA3M35LFGMouser ElectronicsAmericas0 RFQ2025-07-14
KT-0113Q-A10Mouser ElectronicsAmericas0 RFQ2025-07-14
KT11P3SA3M34LFSMouser ElectronicsAmericas0 RFQ2025-07-14
KTG2CNB1BBNNNNMouser ElectronicsAmericas373 BUY RFQ2025-07-14
KT11B2SAM34LFSMouser ElectronicsAmericas354 BUY RFQ2025-07-14
KT12-1A-40L-THT Arrow ElectronicsAmericas81 BUY RFQ2025-07-14
KTElectro Sonic GroupAmericas0 RFQ2025-07-14
KTMASTER/ONLINEAmericas0 RFQ2025-07-14

Parametric Search

Coil VoltageSwitches & Contact FormContact ConfigurationSwitching LoadSwitching VoltageMounting TypeOptionSpecial Feature
Part Number Coil VoltageSwitches & Contact FormContact ConfigurationSwitching LoadSwitching VoltageMountingOptionSpecial Feature
KT03-1A-40L-SMD31ASPST-NO< 100 W< 1000 VDCThrough Hole (THT)StandardHigh Voltage Isolation
KT05-1A-40L-SMD51ASPST-NO< 100 W< 1000 VDCThrough Hole (THT)StandardHigh Voltage Isolation
KT05-1A-40L-THT51ASPST-NO< 100 W< 1000 VDCThrough Hole (THT)StandardHigh Voltage Isolation
KT12-1A-40L-SMD121ASPST-NO< 100 W< 1000 VDCThrough Hole (THT)StandardHigh Voltage Isolation
KT12-1A-40L-THT121ASPST-NO< 100 W< 1000 VDCThrough Hole (THT)StandardHigh Voltage Isolation
KT24-1A-40L-SMD241ASPST-NO< 100 W< 1000 VDCThrough Hole (THT)StandardHigh Voltage Isolation
KT24-1A-40L-THT241ASPST-NO< 100 W< 1000 VDCThrough Hole (THT)StandardHigh Voltage Isolation

Associated Parts

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 4.5kVDC, isolation voltage to 7kVDC. UL approval.

The SHV reed relay is a single in-line and high voltage relay or instrumentation grade reed relay supplied in a molded housing, capable of switching up to 1kVDC and breakdown voltage of 4kVDC. This high voltage reed relay series features an insulation resistance >5 x 10^11 Ω and utilizes minimum PCB area, at only 50% compared to our DIP and DIL reed relay series. It is even smaller than the former potted SIL-HV Reed Relay.

UL – Certificate of Compliance

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 10^13 Ω. Plastic or metal housing, epoxy encapsulated.

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.

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.

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.

Technical Papers

Datasheets
Datasheet – MH Series Reed RelayDatasheet – MT Series Reed RelayDatasheet – M Series Reed RelayDatasheet – C Series Reed RelayDatasheet – U Series Reed RelayDatasheet – MFS Series Reed RelayDatasheet – MF Series Reed RelayDatasheet – MRE Series Reed RelayDatasheet – BH Series Reed RelayDatasheet – Photo MOSFET Relay SMP-42 SeriesDatasheet – MHV Series Reed RelayDatasheet – Photo MOSFET Relay SMP-58 SeriesDatasheet – Photo MOSFET Relay SMP-74 SeriesDatasheet – Photo MOSFET Relay SMP-45 SeriesDatasheet – Photo MOSFET Relay SMP-40 SeriesDatasheet – Photo MOSFET Relay SMP-38 SeriesDatasheet – Photo MOSFET Relay SMP-47 SeriesDatasheet – Photo MOSFET Relay SMP-36 SeriesDatasheet – Photo MOSFET Relay SMP-23 SeriesDatasheet – Photo MOSFET Relay SMP-21 SeriesDatasheet – Photo MOSFET Relay SMP-30 SeriesDatasheet – Photo MOSFET Relay SMP-31 SeriesDatasheet – Photo MOSFET Relay SMP-37 SeriesDatasheet – SHV Series Reed RelayDatasheet – 567 Series OptocouplersDatasheet – 535 Series OptocouplersDatasheet – 530-70 Series OptocouplersDatasheet – 530-03 Series OptocouplersDatasheet – 528 Series OptocouplersDatasheet – 525 Series OptocouplersDatasheet – 522 Series OptocouplersDatasheet – 521 Series OptocouplersDatasheet – MRX Series Reed RelayDatasheet – RM05-8A-S Series Reed RelayDatasheet – RM05-4A Series Reed RelayDatasheet – BT/BTS Series Reed RelayDatasheet – HI Series Reed RelayDatasheet – SIL HV Series Reed RelayDatasheet – LI Series Reed RelayDatasheet – KT Series Reed RelayDatasheet – HM Series Reed RelayDatasheet – HE Series Reed RelayDatasheet – H Series Reed RelayDatasheet – SIL RF Series Reed RelayDatasheet – HF Series Reed RelayDatasheet – CRF Series Reed RelayDatasheet – UMS Series Reed RelayDatasheet – SIL Series Reed RelayDatasheet – MS Series Reed RelayDatasheet – DIP Series Reed RelayDatasheet – DIL Series Reed RelayDatasheet – CRR Series Reed RelayDatasheet – BE Series Reed Relay

Applications

Media

Product Training Module – RF Reed Relays Part I

Welcome to Standex Electronics' RF Reed Relays Part I training module. Reed relays have long been known to have the capability to switch and carry RF signals and fast digital pulses. Hardly anyone thought reed relays were capable of switching and carrying RF up to 20 GHz, because the reed switch's leads are composed of nickel/iron which has a relatively high permeability or (MU). However, 20GHz is now a reality at Standex Electronics. We will be presenting the reasons Standex Electronics and their design team have made this possible.

Product Training Module – RF Reed Relays Part II

Welcome to Standex Electronics' RF Reed Relays Part II training module. This second RF presentation assumes you have already heard the first Standex Electronics RF Part I presentation. Understanding the simple physical layout of a reed relay makes it easy to design and rest reed relays for RF and fast digital pulse applications. RF is dependent on the physical layout or signal path it takes while going through circuits and the components that make up those circuits. We will show you how the physical layout of the reed relay will have a direct bearing on the RF signal's success going into and out of the reed relay. Coupled with the relay's physical layout, the materials making up the reed relay are also important.

Product Training Module – Reed Relay Overview

Welcome to Standex Electronics Reed Relay training module. This module will define key terms used in reed relays and their applications. The module will also describe the structure and function of reed relays and their vast number of applications.

Product Training Module – Magnet Technology & Their Uses

Welcome to Standex Electronics where we will be exploring what magnets are and how they are used in the electronic industry. We will define the key terms relating to magnets and we will explore what magnets are, what they do, and how they are used.

Product Training Module – Latching Form B Reed Relays & Sensors

Welcome to Standex Electronics' Latching and Form B Reed Relay and Sensor training module. This module will define key terms of Form B and Latching sensors and relays. The module will also describe the structure and function of latching and Form B reed relays and sensors.

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