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Silent detect switch eyes automotive, industrial apps

Posted: 11 Apr 2008 ?? ?Print Version ?Bookmark and Share

Keywords:silent detect switches? high flexibility? automotive apps?

KSJ Series switches

C&K Components has developed a versatile silent detect switch with a variety of orientations. Designated the KSJ Series, the spst, normally open detect switch features high actuation tolerances along with silent and linear operation during actuation with no tactile effect.

"The features of this detect switch, including straight and vertical orientations, extended actuation periods, and high actuation tolerances, as well as silver and gold platings for various environments, provide designers with a high degree of flexibility," said Eric Grange, product manager for C&K Components. "Coupled with the 'ghost' silent actuation mechanism and designed for end-of-stroke use, the switch is ideal for applications ranging from automotive to industrial to computer peripherals."

As an automotive-grade product, typical applications for the KSJ Series switch include retractable dashboard LCD end of stroke detection, defroster positioning in HVAC rotating buttons and passenger airbag switches. The switch is also suitable for computer infrastructures and industrial electronics, such as rotating and sliding button end of stroke position detection.

The top or side actuated KSJ Series detect switch features long actuation periods of up to 2000 hours under 85C, which ensure higher time at ambient temperature. The spherical actuator ensures 30 operation (actuation force angle offset) and has extended travel with a maximum stroke of 1.2mm. The switch is designed with flux sealing and 100K actuation endurance, and has a feedback of 1N.

Voltage range for the detect switch is 20mV to 32Vdc and current ranges from 1mA to 50mA. Contact resistance is less than 100m, with a bounce time of less than 1ms. Power ratings are 1VA for the silver plating and 0.2VA for the gold plating. Operating temperature ranges from -40C to 85C (silver plating) and -40C to 125C (gold plating).

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