Reed Relays and
Electronics India Limited
Manufacturer of Reed Switches, Reed Sensors and Reed-based products
Reed Relays and Electronics India Limited Incorporated in 1971

MO-1422 Miniature Off-center Reed Switch

MO-1422 Miniature Off-centre contact Reed Switch Drawing

All dimensions in mm

MO-1422 Cropped reed switch MO-1422 SMD reed switch MO-1422 vertical mount reed switch MO-1422 horizontal mount reed switch

Click thumbnails to view actuation distances


Off-center contact 14.0 mm glass size Omni-polar 15W Contact rating Does not require power for operation Normally Open, Form A contact  Sputtered Ruthenium contact Inert gas filled glass capsule Four formations Tin plated leads  RoHS Compliant and Lead-free  Not Sensitive to ESD


This off centre contact Form A reed switch is designed for highly sensitive magnet applications. Measurements are always taken with the contact overlap portion centered to the length of the test coil, with the width of all blades in a batch of switches, facing one way, for better in-group measurement accuracy. This reed switch is completely Lead-free and conforms to the RoHS directive. The cropped version is suitable for smaller plastic housings and can be soldered to cables, the SMD version is suitable for reflow on PCBs, and the vertical and horizontal mount versions are suitable for mounting on through hole PCBs. . Information on tolerances for these formations can be found here.


Operate Range AT 15 – 50
Release Range AT 5 – 35
Contact Rating (max) W/VA 15.0
Switching Current (max) A 0.5
Carry Current (max) A 1.0
DC Switching Voltage (max) VDC 150
AC Switching Voltage (max) VAC 125
Breakdown Voltage (min) VDC 200
Contact Resistance (max) 150
Insulation Resistance (min) Ω 1011
Capacitance (min) pF 0.2


Operate Time (max) ms 1.5
Bounce Time (max) ms 0.8
Release Time (max) ms 0.15
Resonance Frequency Hz >2000
Operating Frequency Hz 500
Operating Temperature °C -40 to +200
Shock Resistance (½Sin wave for 11ms) G 50
Vibration Resistance (10-2000Hz) G 20
Test Coil Code 717 102 002

Ordering Code

MO-1422-(Operate AT Band)-(Lead Formation Code)

Formation Code C S V H
Cropped SMD Vertical Mount Horizontal Mount

Ordering Code Examples

MO-1422-15-20 denotes 10-15 Operate AT with unmodified leads
MO-1422-15-20-C denotes 10-15 Operate AT band with cropped leads

Handling of Reed Switches

Dropping Reed switch Reed Switches are sensitive devices that easily develop micro cracks in the glass to metal seals when subjected to external...Continue reading ->


Reed Switch cropping Reed switch leads may need to be cropped for use in custom plastic housings, after soldering with external cables. Cropping...Continue reading ->

Soldering Guide

Soldered Reed switch Manual Soldering of reed switch leads may be required when using custom plastic housing with external cables. The reed switches...Continue reading ->

Ferro-magnetic parts

Ferromagnetic parts Reed Switches use an alloy of Nickel and Iron with a few other elements that make the alloy ferro-magnetic and...Continue reading ->

Potting and Encapsulation

Dispensing unit When potting or encapsulating reed switch assemblies in custom housings, selection of materials are important. The specification of epoxy or...Continue reading ->

Other Special Configurations Available

Lower Static Contact Resistance
Dynamic Contact Resistance Limit
Higher Insulation Resistance
Special Release Limits
Gold plated leads


Although we can never restrict the use of a reed switch to a particular field, the following is a list of some of the applications that the MO-1422 reed switch is known to perform well.

Float Switches in Portable Air Conditioners

portable ac Portable Cooler Air Conditioners remove heat and moisture from an occupied space thereby improving the comfort of the occupants. The...Continue reading ->

Reed switches in Barcode Scanners

Barcode Scanner Barcode scanners in supermarkets can be clicked on to a docking system that is integrated with the check-out conveyor belt...Continue reading ->

Magnet sensors in motorized Hospital Beds

Magnet sensors in end position detection Adjustable Bed Lets face it, no one likes to get into an accident or fall sick and get admitted in...Continue reading ->

Reed switches in Gear speed and direction sensing

Reed switches in gear speed and direction sensing Gears Mechanical machinery always have a set of manual controls that not only direct the machinery between a forward and...Continue reading ->

Reed switches in Electronics and Science Kits

Reed switches in science kits Science Kit Reed Switches are used in many electronics and science kits for experimenting on various circuits and scientific phenomena....Continue reading ->

Reed sensors in weather proof electronic equipment

Water proof reed switch IP67 Housings The IP Code or the International Protection Marking states standards for electrical and electronic enclosures to ensure that...Continue reading ->
MO-1422 15W Miniature Off-center Reed Switches
14.0mm x ø2.25mm, complete data sheet and technical specifications. This Reed Switch supersedes TRA 291 and can be considered a direct equivalent. Customers can safely use Mo-1422 in place of ORD 221 or HSR-077R.
Brand: RRE
Manufacturer: Reed Relays and Electronics
Model: MO-1422
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