NKK Switches Process Sealed Subminiature Toggle A28JH/328-JA

The A series is a family of sealed subminiature toggle switches designed for low-voltage, low-current logic-level circuits. All variants feature a totally sealed body with glass fiber reinforced polyamide housing and gold-plated phosphor bronze contacts, ensuring contamination resistance and compatibility with automated soldering and cleaning. Terminals have a 2.54mm (0.100") spacing conforming to standard PCB grids. The switches offer nonshorting contact timing, a 26° angle of throw, and mechanical life ratings of 50,000 to 100,000 operations depending on circuit type. Operating temperature ranges from -30°C to +85°C, with compliance to vibration and shock standards. Contact resistance is 50 milliohms maximum, insulation resistance 500 megohms minimum, and dielectric strength is 500V AC for one minute. Switches are available in SPDT, DPDT, and other pole configurations with bat, paddle, or snap-top toggles, and terminal orientations including vertical and right-angle PCB mounting.