RRE for Reed switch and Reed sensor REliability

RRE India Limited: A Reed switch, Reed Sensor and Thermal Switch Manufacturer

RoHS compliant Reed Switches, Reed Sensors and Reed-based products

ISO 9000 certified Reed Switch and Reed Sensor manufacturer

RRE Home Reed Sensors Reed Switches Magnet Sensors Thermal Switches Applications Technical Support

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Usage Notes on Reed Switches

Reed switches are delicate products. Handle with extra care.

Cropping and forming of terminals will change the operate, release, and differential values.

green rightDo's

Use a flexible resin for potting or encapsulation, after protecting the seals with a resilient, shock absorbing compound like a silicone paste.

When cropping or forming, gripping of leads between the seal and the cropping or forming point is mandatory.

When welding or soldering, gripping of leads between the seal and the welding point, using a thermally conductive material is recommended. This works like a heat

sink and diverts most of the heat away from the seal.

When switching inductive or capacitive loads, use contact protection circuits.

Ask for reed switches in an RAT group instead of an OAT group, when combining with magnets for making them normally closed contacts.

Ask for reed switches in an OAT group and specify a minimum hysteresis, when combining with magnets for making them latching contacts.

red wrongDon'ts

Do not crop or form the leads less than 2 mm from the seals.

Do not use ferro-magnetic mounting parts, screws, or other ferro-magnetic devices nearby. This will affect the sensitivity (AT).

When manual soldering, do not subject to more than a 5 second dwell. This may cause damage to the seals, change sensitivity, and reduce solderability.

Do not drop. Dropping or subjection to shock will permanently damage the contact or alter the sensitivity (AT).

Switching voltage, switching current, and contact rating should not exceed maximum limits stated in specification sheets.

 

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Reed Relays and Electronics India Limited, 2008

 

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Dilbert would have used Reed Sensors!