SMT rotary encoder with push-switch

30 June 2004 Switches, Relays & Keypads

The E20 is the latest rotary encoder from Elma Electronic and it combines an integral push switch with a long life mechanical encoder in an SMT package specifically designed for automatic assembly using either reflow or wave soldering.

By providing a separate snap-in shaft, not only can the E20 be mounted by standard pick-and-place nozzles, and mated with standard conductive or non-conductive aluminium shafts, but Elma says it can offer custom shaft configurations for volume applications.

Gold contacts and advanced design contribute to a minimum encoder life of 100 000 rotations, together with a switch life of 100 000 operations. The E20 is designed as a convenient mouse replacement for on-screen menu selection and for compact user input applications, such as industrial control, avionics, audio/video and portable communications. For maximum flexibility, options include 16 or 30 position indexing, and a range of detent and push switch forces from light to heavy, enabling designers to match a wide range of operator needs from laboratory equipment to outdoor operation with gloved hands.

Reliability is assured with a -40 to +85°C temperature range, a UL-94-V0 body and an IP65 protection rating.

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