The MK33-87 surface mount reed switch is a bare glass sensor engineered with a new lead design, providing stability and optimum coplanarity. The unique barrel lead design provides superb solderability and self-alignment to the pads for easy pick and place. The MK33-87 is an ultraminiature 10mm version is capable of switching 200 VDC. Featuring an extremely low-profile construction, ideal for applications requiring small footprint in printed circuit board (PCB) assemblies. TheMK33-87 SMD series tiny footprint allows it to be mounted in a tight reed switch ladder array, for multi-point and continuous liquid level monitoring applications. Supplied in tape and reel according to IEC 60286- 3.
| Contact Form | 1A (SPST) Normally Open (N.O.) |
| Operating Range | 10-60 AT |
| Rated Power Max. | 10W/200VDC/0.4A |
The preferred markets for this series are Industrial, Transportation and Alarm & Security. Used in applications like ladders for fluid level sensors, metering applications and PCB surface mounting for example smoke and fire detectors.
Series Data Sheet (PDF)
| Item No. | Datasheet | Distributor | Region | Quantity | Cart | RFQ | Inventory Date |
|---|---|---|---|---|---|---|---|
| MK33-87-C | Digi-Key Electronics | Americas | 0 | RFQ | 2024-12-08 | ||
| MK33-87-C | Digi-Key Electronics | Americas | 0 | RFQ | 2024-12-08 | ||
| MK33-87-E | Digi-Key Electronics | Americas | 0 | RFQ | 2024-12-08 | ||
| MK33-87-E | Digi-Key Electronics | Americas | 0 | RFQ | 2024-12-08 | ||
| MK33-87-D | Digi-Key Electronics | Americas | 0 | RFQ | 2024-12-08 | ||
| MK33-87-B | Digi-Key Electronics | Americas | 0 | RFQ | 2024-12-08 | ||
| MK33-87-E | Digi-Key Electronics | Americas | 0 | RFQ | 2024-12-08 | ||
| MK33-87-C | Digi-Key Electronics | Americas | 0 | RFQ | 2024-12-08 | ||
| MK33-87-D | Digi-Key Electronics | Americas | 0 | RFQ | 2024-12-08 | ||
| MK33-87-B | Digi-Key Electronics | Americas | 0 | RFQ | 2024-12-08 | ||
| MK33-87-B | Digi-Key Electronics | Americas | 0 | RFQ | 2024-12-08 | ||
| MK33-87-D | Digi-Key Electronics | Americas | 0 | RFQ | 2024-12-08 | ||
| MK33-87 | Standex Factory | Americas | 0 | RFQ | 2024-12-08 | ||
| MK33-87-B | Mouser Electronics | Americas | 0 | RFQ | 2024-12-08 | ||
| MK33-87-C | Mouser Electronics | Americas | 0 | RFQ | 2024-12-08 | ||
| MK33-87-E | Mouser Electronics | Americas | 0 | RFQ | 2024-12-08 | ||
| MK33-87-D | Mouser Electronics | Americas | 0 | RFQ | 2024-12-08 |
| Contact Configuration | Operate Range | Contact Rating | Switching Voltage | Switching Current | Overall Length (mm) | Size Body |
|---|---|---|---|---|---|---|
Miniature MK23-35 surface mount reed switch with glass length of 10.5mm and diameter of 2.1mm. Rated power 20 W, Switching voltage 200 VDC, Switching current 1 Amp DC. The MK23-35 surface mount reed switch is a bare glass version of our surface mount reed sensors, offering a more economic and compact design as compared to our over-molded reed sensors. Sold in Tape & Reel packing according to IEC 286/part 3 and is suitable for pick and place automation.
Reed Switches work well with smart home automation systems because they draw no power compared to other magnetic sensing elements. They can be married to a wireless or Bluetooth technology and placed in remote battery powered door sensors or window sensors, or anything where you’re looking for movement or proximity. They’re a very cost-effective and robust component suitable for the home environment, requiring fewer connections resulting in longer battery life.
In today’s homes and also commercial properties, there’s an increased necessity for control to improve efficiency and productivity. And with that control, you have different products that measure temperature, water levels, security, and locks, so within those products reed switches play a major role in making them “smart”.
Standex Electronics is a global leader in the design, development, and manufacturing of standard and custom Reed Switches.
Welcome to Standex Electronics' Reed Switch Technology training module. This module will explain the functionality, unique features, structure, and crucial manufacturing and design element to reed switch technology. This module will also explain some basic switch parameters as well as describe basic reed switch operation along with a few applications.
Welcome to Standex Electronics' 'how magnets and reed switches interact with each other forming a sensing function' training module. This module will define key terms for magnets and reed switches. The module will also describe how the positioning of the magnet's north and south poles relative to the reed switch, produces different magnetic field arrays. Understanding these magnetic field arrays will give insight into how the magnet and reed switch form their sensing function.
The Reed Switch is the core element in Reed Sensors, Level Sensors and Reed Relays. A magnetic contact switch consisting of two ferromagnetic blades are hermetically sealed inside a glass tube. The glass tube is filled with a high purity inert gas. Under non operating conditions the reed switch contacts do not touch. Standex Electronics is leading the way in reed switch manufacturing...
Ultra miniature and high precision Reed Switch manufacturing in the most modern factory of its kind. Standex Electronics micro technology enables the mass production of Reed Switches at the highest quality for competitive pricing. The complete process from the sputtering of the magnetic contacts through the hermetic sealing and final testing...
Standex Electronics expert discusses reed switch technology and why reed switches play such an important role in many applications.
A Reed Switch Sensor on a surface mount PCB assembly shown in 3-D with actuating magnet. When viewed in three dimensions, the magnetic flux lines emanating from the magnet look like a beer barrel keg; and also in three dimensions, with the magnet parallel to the reed switch, the center magnetic lobe array looks like a donut and the two outside lobes look more like a boxer's punching bag -- the kind hung from the ceiling. Essentially the fields from the magnet and the fields for the lobes are symmetrical when viewed in three dimensions. As seen in two dimensions, when the magnet is brought into one of the lobes the reed switch contacts will close. Now, as seen in three dimensions the magnet can be brought into the lobes in any spherical direction for contact closure to occur. Here the magnet is moved into the sphere of influence of the lobes of the reed switch showing the closure and opening when the magnet enters the lobes and passes through them, The change in lighting signifies the closing and opening of the reed switch contacts.
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