Illuminated pushbuttons have extremely compact size

10 August 2005 Switches, Relays & Keypads

The right-angle Elum illuminated pushbutton switches from ITT Industries, Cannon feature an LED built into the actuator, removing the need for a separate LED and light pipe on the PCB. This is a robust design that simplifies component integration, preventing mechanical misalignment with the panel or system casing. Special LED colours and customised caps can be used to achieve specific visual renderings.

With a very low 6 mm profile, the Elum pushbutton switches are available in through-hole and surface-mount configuration. They have self-cleaning SPDT contacts that withstand currents ranging from 0,01 to 250 mA, with DC voltages from 20 mV to 50 V. Operating force is 4,5 N at full actuation (5,1 mm travel max).

The latching version (push-push) suits switching functions such as 'mode select' and 'power on/off', while the momentary version prevails for 'test', 'reset' and 'notification' functions.

The company's Elum switches are designed to meet the requirements set by original equipment manufacturers of telecom, industrial, medical, automotive and consumer electronics. They are compatible with RoHS directives and with high-speed reflow soldering lines.

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