FSMSM is a surface mount tactile switch designed for compact electronic applications requiring momentary contact operation. It features a 3.5 x 6mm footprint with SPST (single-pole single-throw) off-(on) momentary configuration, stainless steel silver clad plate contacts, and a PPS case material with nylon actuator. The switch offers an actuation force of 180±50 grams, contact rating of 50 mA @ 12 VDC, initial contact resistance of 100 milliohms max, and insulation resistance of 100 megohms min @ 500 VDC. Operating temperature ranges from -40°C to +85°C with a life expectancy of 20,000 cycles. This tactile switch is ideal for user interface applications in consumer electronics, industrial controls, and portable devices where reliable tactile feedback and space-efficient mounting are required.