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Ultra-thin DIP rotary switch boasts better optimization

Posted: 27 May 2008 ?? ?Print Version ?Bookmark and Share

Keywords:rotary switches DIP? PCBs? FR DR series?

NKK Switches Inc. has announced the availability of the FR series of 10mm ultra-thin DIP rotary switches. This newly designed FR series replaces NKK's DR series rotary switches.

The FR series offers compact dimensions and a low profile allowing high-density mounting and close stacking of PCBs. Available in real or complement codes, decimal or hexadecimal configurations, the FR series can be specified in through-hole or SMD models.

The FR series of binary-coded DIP rotaries are environmentally friendly devices and are RoHS compliant. The heat-resistant resin materials are UL94V-0 and suited for lead-free solder processing applications including vapor phase and infrared convection reflow soldering for the SMD option.

Highly visible and easy-to-read legends use arrows to indicate position and provide trouble-free code setting. Color-keyed actuators identify codes. Electrical capacity switching rating is 100mA at 5Vdc; nonswitching rating is 100mA at 50Vdc. The cam-activated movable contact and gold contacts ensure contact reliability and continuity; while the detent mechanism provides positive action for accurate switch setting. Actuators are fully rotational and can be operated either clockwise or counterclockwise. Through-hole devices can be specified with screwdriver or shaft actuators with straight or right-angle mounts. Terminal spacing in straight PC through-hole is 0.1-inch between pins and 0.3-inch between rows. Right-angle versions are available in two different footprints. The standard footprint is 0.1-inch between pins and 0.1-inch between rows.

A new option of .100-inch between pins with 0.2-inch between rows is available to facilitate changeover designs from DR series footprints. Crimped terminals ensure secure PC mounting and prevent the FR devices from dislodging during soldering.

SMD versions are straight mount with screwdriver actuators. Gull-winged terminals deliver mechanical stability during soldering and simplify solder joint inspection. The coplanarity tolerance zone is 0.0059-inch (0.15mm) maximum, the allowable distance between all considered surfaces in two parallel planes. Optional snap-on knobs are available for screwdriver actuated models and feature a black knob with a transparent flange.

- Gina Roos

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