Please note: All dimensions represent the smallest package size in a series and are listed in order as length, width and height unless otherwise specified.

MK15 Reed Sensors
MK15 Surface Mount Reed Sensors
Low Cost Surface Mount Reed Sensors for Proximity Sensing Applications. [more]
MK17 Reed Sensors
MK17 Surface Mount Reed Sensors
Ultra Miniature Surface Mount Reed Sensors for Proximity Sensing Applications. [more]
MK23 Reed Sensors
MK23 Bare Glass SMD Reed Sensors
Bare Glass Surface Mount Reed Sensors for Proximity Sensing Applications. [more]
MK30 Reed Sensors
MK30 Surface Mount Reed Sensors
MK30 are magnetically operated, SMD reed proximity switches for high voltage applications. [more]

New Catalog - 2014

Tutorials - Audio Version

3-D Magnetic Mapping
Magnet Interactions
Magnet Technology & Uses
Latching Sensors & Relays
Liquid Level Sensing
Reed, Hall & EM Overview
Reed Switch Technology
Reed Relay as RF Switch Part 1
Reed Relay as RF Switch Part 2


Form A = normally open contact (N. O.)
Form B = normally closed contact (N.C.)
Form C = change over contact (S.P.D.T.)
Form E = Bistable / Latching
AT = Ampere Turns; Parameter that describes magnetic sensitivity.

Reed Sensor Resources

Activation Distances
A guideline for Reed Sensor magnetic activation distances.

Basic Reed Switch
General function and description of Reed Switches.

Electrical Parameters
Basis electrical characteristics of Reed Switches.

Handling Precautions
Proper handling techniques for Reed Sensors.

Life Test Data
View life test data for Reed Switches.

Magnetic Field Strength
Ampere Turns (AT) vs. milliTesla (mT).

Magnetic Operation
A Reed Switch used in conjuction with a permanent magnet is a Reed Sensor.

Reed Sensor Applications
View a small sample of the different Reed Switch applications.

Technology Comparison
The benefits of using a Reed Sensor vs a Hall Effect sensor.