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

MM-1018 Micro Miniature Reed Switch

This 10mm long, Form A reed switch is designed for low power, high speed switching applications, and has a cost advantage over the UM-0018 Ultra-miniature series. The flattened leads are useful for orienting the internal blades to face one way while soldering, welding etc., for maximum in-group sensitivity, and the three different Differential types available, cover a wide range of Release AT specific applications. This micro-miniature reed switch can be molded with a 0.25 mm wall around the glass capsule for use in hazardous industrial environments to withstand higher shock and vibration. This reed switch is completely Lead-free and conforms to the RoHS directive. Click to download this product data sheet as a PDF.

MM-1018 Micro Miniature Reed Switch Drawing
All dimensions in mm
Not to be cropped or formed, less than 2.0 mm from the seals


This reed switch is suitable for use in the following applications and in many others: Microphones,  reed relays, power showers, vibration sensors, sewing machines, automobile crash sensors, defective lamp detection, pressure gauges, vane sensors, fuel pumps, electric fishing reels, pedometers, board games


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 0.75 0.75 0.75
DC Switching Voltage (max) VDC 100 100 100
AC Switching Voltage (max) VAC 70 70 70
Breakdown Voltage (min) VDC 200 200 200
Contact Resistance (max) 100 120 150
Insulation Resistance (min) Ω 109 109 109
Capacitance (min) pF 0.2 0.2 0.2


Operate Time (max) ms 0.35
Bounce Time (max) ms 0.3
Release Time (max) ms 0.15
Resonance Frequency Hz >2000
Operating Frequency Hz 500
Operating Temperature °C -40 to +120
Shock Resistance (½Sin wave for 11ms) G 30
Vibration Resistance (10-2000Hz) G 20
Test Coil Code 717 102 003

Lead Formation

MM-1018 reed switches can be supplied in the standard formations shown below. The cropped version is suitable for smaller plastic housing and can be soldered to cable, the SMD version is suitable for reflow on PCBs, the vertical mount and horizontal mount versions are suitable for mounting on through hole PCBs.

Please click on the thumbnail below to view the relevant actuating distance for each type of formations. Do contact us for any other special formations or non-standard bending /forming pitches. More information on these formations and tolerances for the dimensions given below can be found here.

MM-1018 full length reed switch MM-1018 Cropped reed switch MM-1018 SMD reed switch MM-1018 Vertical Mount reed switch MM-1018 Horizontal Mount reed switch
F-Full Length C-Cropped S-SMD V-Vertical Mount H-Horizontal Mount

Ordering Code

MM-1018-(Differential Code)-(Start Operate AT)-(Finish Operate AT)-(Lead Formation code)
Please check our AT band FAQ for help on release AT codes


Denotes Medium Differential in 10-15 Operate AT band with cropped leads.

Other Special Configurations Available

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


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MM-1018 Micro Miniature Reed Switches