Y48A21211FPLFS is a long travel tact switch designed for surface mount technology (SMT) applications, featuring a momentary contact function with SPST normally open configuration. The switch incorporates a rubber actuator with silver contact material, offering an operating force range of 1.6–3.2 N (approximately 160–320 grams) and a travel to make of 1.3 mm with tolerances of +0.3/-0.2 mm. Electrically, it supports a maximum switching power of 1.0 VA at 32 VDC with a maximum current of 50 mA, contact resistance below 100 mO, and a bounce time less than 5 ms. The switch operates reliably over a temperature range of -40°C to +85°C, is IP 40 sealed, RoHS compliant, and rated for 100,000 operations, making it suitable for front panel controls, automotive dashboards, telecommunications equipment, and instrumentation applications.