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Sealed switches operate up to 1M cycles

Posted: 05 Apr 2006 ?? ?Print Version ?Bookmark and Share

Keywords:ST? STV? tactile switch? CIT Relay & Switch? Gina Roos?

CIT Relay & Switch launched the ST series of through-hole tactile switches for a broad range of applications. These RoHS-compliant, process-sealed switches operate up to 1 million cycles with an optional stainless steel dome contact.

The ST series sealed switch features an improved heat pressure tab staking process that prevents top and actuator separation from the switch body. This unique CIT process is said to maintain integrity of the watertight seal. The series also includes a right-angle version designated as STV.

The ST switches are housed in 7.2-by-7.2mm package, while the STV right-angle version comes in an 8-by-8mm package. Both the ST and STV devices provide actuation forces of 130-, 200-, 300- and 500gf.

Electrical ratings are 50mA at 48Vdc silver and 10mA gold (maximum). Minimum operating current for both silver and gold is 1mA. Electrical life is rated at 100,000 cycles typical. Dielectric strength is 250Vrms minimum with insulation resistance greater than 100MW. Actuator travel is 0.30mm 0.1mm.

The ST series construction includes a stainless steel cover with silver-plated brass terminals and silver-plated phosphor bronze contacts. An optional 130gf stainless steel dome contact increases the operating life to 1,000,000 cycles. The gold-plated contact and terminal option makes the ST series a good fit for dry-circuit applications. The actuator and housing of the switch are 4/6 Nylon. Standard actuator height options range from 4.7mm to 10mm.

Suitable for a variety of applications the ST switches may find homes in instrumentation, industrial control, medical, automotive, telecommunication, household appliances, heating control systems, computer mice, automation, door entry systems and remote controls.

Volume pricing is 14 cents, depending on configuration. Delivery is four to six weeks.

- Gina Roos

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