This document describes the features and characteristics of the 1 B3U Ultra-small Tactile Switch, including its ultra-small size, high contact reliability, dust-proof construction, and suitability for high-density mounting. The switch is ideal for high-density mounting on PCBs for mobile equipment. Ordering information and operating characteristics are also provided in the document.
The B3U series is an ultra‑small tactile switch (1.2 × 3 × 2.5 mm) designed for high‑density PCB mounting in mobile equipment. It offers high contact reliability, dust‑proof construction, and optional ground terminals for static protection.
The sheet provides ordering information, mechanical dimensions, electrical specifications, environmental limits, RoHS compliance, and handling precautions such as avoiding washing and excessive actuation force.