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
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R2E Latching / Bi-stable SMD Reed Sensors

R2E-S SMD Latching reed sensor drawing
R2E-S actuation distance

Highlights

Does not require power for operation  Bi-stable, form E contact remembers state  Sputtered Ruthenium contact  Polarity Sensitive  Two types of lead configurations  Molded with internal blades parallel to SMD feet  Packed in tape and reels conforming to IEC-60286-3 norms  RoHS Compliant and Lead-free  Not Sensitive to ESD

Description

These bi-stable reed sensors are built with an inbuilt biasing magnet. As they are molded with pre-flattened leads, no shock is transferred into the device when SMD formation takes place. Various latching/unlatching distances are available depending on the magnet used. The sensors are tested 100% for Operate AT, Release ATStatic Contact Resistance and Variable Contact Resistance before packing. Our products are completely Lead-free and conform to the RoHS directive.

Applications

This reed sensor is suitable for use in the following applications and in many others: floor detection for elevators and lifts, hoists

Specifications

Contact Form E
Contact Rating (max) W/VA 10.0
Switching Current (max) A 0.5
Carry Current (max) A 1.0
DC Switching Voltage (max) VDC 100
Breakdown Voltage (min) VDC 150
Contact Resistance (max) 150
Operating Temperature °C -20 to +100
Shock Resistance (½Sin wave for 11ms) G 30
Vibration Resistance (10-2000Hz) G 20

Ordering Codes

R2E-(Lead Formation Code)-(Operate AT Code)

Formation Code Lead Formation OAT Code Before
S SMD 1 10-15
F Low-profile SMD

Please contact us for Re-closure values.
Operate AT bands indicated above are for unmodified reed switch.
Example: R2E-F-1
Denotes 10-15 Operate AT, Low profile SMD formed.

Other Special Configurations Available

Non standard lead formations
Special Operate AT and Release AT limits
Gold plated leads

Possible magnet actuations

Form E Latching Reed Sensor Magnet Actuation
As shown in the examples above, like poles of magnet and sensor cause a latch, and unlike poles, an un-latch. Choosing the right AT band, magnet strength, and operating axis, will restrict the number of operates and releases to one. Click here to view actuation distances of this sensor with the standard magnets.

Recommended Reflow Profile

SMD Soldering Procedure

Tape and Reel Dimensions

The R2E-S and the R2E-F can be tape and reel packed for automatic pick and place, as per IEC-60286-3 norms. 2000 will be packed per spool. 40 – 80g force will be required to peel off cover tape.
R2E-S and R2E-F Latching Reed Sensor Tape and Reel Dimensions

R2E Latching / Bi-stable SMD Reed Sensors
R2E Bistable SMT reed switches: 19.5 mm pitch gull wing, 10W, polarity sensitive, complete data sheet and technical specifications.
Brand: RRE
Manufacturer: Reed Relays and Electronics
Model: R2E
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