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

SM-1322 Sub Miniature Reed Switch

SM-1322 Sub Miniature Reed Switch Drawing
SM-1322 Cropped reed switch SM-1322 SMD reed switch SM-1322 Vertical Mount reed switch SM-1322 Horizontal Mount reed switch

Click thumbnails to view actuating distances.


Release AT configurable from 40% to 90% of Operate AT  Glass sealed on round portion of wire for high seal strength  Sputtered Ruthenium contact  Capable of switching 230VAC  RoHS Compliant and Lead-free  Not Sensitive to ESD  10-40 Operate AT band


This Form A reed switch is built with a 2.25 mm diameter glass with a higher wall thickness for better glass to metal seals, and is a good solution for general purpose, high volume applications with a little shock and vibration, such as toys. The centre contact also makes it suitable for coil applications. The three Differential ranges available cover a wide range of Release AT specific applications. A specially Sputtered contact for 230 VAC line voltage switching is also available. This reed switch is completely Lead-free and conforms to the RoHS directive.


This reed switch is suitable for use in the following applications and in many others: copiers and scanners, coffee machines, flow sensinginclination sensors, lake current measurement, power switches in explosive areas, ferrous metal detection sensors, gear speed and direction sensors, portable air conditioners


Differential Code L M H
Operate Range AT 10 – 40 10 – 40 10 – 40
Release Range AT 4 – 20 6 – 25 7.5 – 30
Contact Rating (max) W/VA 10.0 10.0 10.0
Switching Current (max) A 0.5 0.5 0.5
Carry Current (max) A 1.5 1.5 1.5
DC Switching Voltage (max) VDC 180 180 180
AC Switching Voltage (max) VAC 130 130 130
Breakdown Voltage (min) VDC 200 200 200
Contact Resistance (max) 100 120 150
Insulation Resistance (min) Ω 1011 1011 1011
Capacitance (min) pF 0.2 0.2 0.2


Operate Time (max) ms 0.5
Bounce Time (max) ms 0.15
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

SM-1322-(Differential Code)-(Start Operate AT)-(Finish Operate AT)-(Lead Formation code)
Please check our AT band FAQ for help on release AT codes

Cropped SMD Vertical Mount Horizontal Mount

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. Please click on the thumbnails to view the relevant actuating distances for various Operate AT bands. Information on tolerances for these lead formations can be found here.
SM-1322-L-10-15 denotes 10-15 Operate AT with unmodified leads
SM-1322-H-10-15-S denotes low differential in 10-15 Operate AT band with SMD formed leads

Other Special Configurations Available

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

SM-1322 10W Sub Miniature Reed Switches
13.0 mm x ø2.25 mm, Flattened leads, complete data sheet and technical specifications. This Reed Switch supersedes TRA 2028 and THA 2028 and can be considered a direct equivalent. Customers can safely use SM-1322 in place of MDCG 4, ORD 228 VL, KSK-1A66, RI 23, RD-7B orMKA-14103.
Brand: RRE
Manufacturer: Reed Relays and Electronics
Model: SM-1322
3.8 based on 6 reviews