PCB includes surface mount LEDs for array backlighting

Developed to improve legend display characteristics of the EMC Series 600-800 lighted pushbutton switches by Electro-Mech Components, the company has included surface mount LEDs on a PCB inside the lens base and assembly on its Series 900-SMT.

The SPST-DPDT-6PDT illuminated switch includes several design enhancements to maximise LED lighting to meet any OEM front panel switching application that requires split legend lenses, says the company. It is suitable for custom PCBs and has a lens brightness of 100 fL and above, depending on lens cap and filters.

It can be used for white LEDs, with coloured legends able to be created using colour filters.

The switch has momentary, alternate, push-on-remain-in push-off and momentary snap feel functions and a lens retention force of five to seven lbs (2.7 to 3.2kg).

Other features are 1.0 resistive load at 30V DC for switch circuits and 28V DC operating voltage for LEDs.

The lightweight switch weighs less than 1.2 oz. [34g], mounts into a 0.875-inch (22.3mm) square mounting hole, and requires approx. 2.40-inch (61.0mm) of space behind the panel.  Interconnection to circuitry or wiring is provided by standard solder lug terminals which accept 20awg wire, or the unit can be provided with PCB pin terminals.

The Series 900-SMT switch is rated at 1.0A resistive at 28V DC. Other features include four different slide bar switching options, operating pressure of 32 oz. (+ 8 oz.), plunger travel of approximately 0.25-inch (6.4mm), and a rated switch life of 100,000 minimum actuations.

Electro-Mech Components specialises in the design and manufacture of illuminated pushbutton switches, indicator lights, potentiometer-switch assemblies, and multi-switch interlocking assemblies.

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