FSMSMTR is a surface mount tactile switch from the FSM Series designed for momentary switching applications. It features a compact 3.5 x 6 mm footprint with SPST (single-pole single-throw) off-momentary on configuration. The switch offers an actuation force of 180±50 grams, contact rating of 50 mA at 12 VDC, and a life expectancy of up to 20,000 cycles. Constructed with stainless steel silver clad plate contacts, PPS case material, and nylon actuator, it operates reliably across a temperature range of -40°C to +85°C. This switch is ideal for consumer electronics, portable devices, and industrial control panels where space-efficient, reliable tactile feedback is required.