Pendulum detect switches
21 October 2008
A series of micro-miniature surface mount detect switches have been developed.
Available through distributor Rutronik, the switches from C&K Components, designated the SDT Series, have a pendulum style construction that allows the switch to be actuated from the top or the side. The switch features a low profile and sits 3.3mm off the PC board.
C&K claims that it is because of the package size and versatility (due to the actuation flexibility) that make the detect switch suitable for consumer electronics, medical devices and ATCA hot-swapping applications. The SDT Series switch features a maximum actuation force of 30g and the recommended stroke to actuate the switch is 30° degrees or more off the centre line.
The minimum mechanical and electrical life for the pendulum style switch is a claimed 100,000 cycles and the operating temperature ranges from -20°C to +70°C (storage temperature is -30°C to +80°C). The SDT Series detect switches are RoHS compliant and compatible, pick and place compatible, and are available in tape and reel packaging. Contact rating is 1mA 5VDC, with a maximum contact resistance of 1mΩ.
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