Y31C01401FPLFS is a sealed tactile switch from the KSC series designed for surface-mount technology (SMT) applications requiring reliable momentary action switching. The switch features an operating force of 1.45 ± 0.55 N with a travel distance of 0.45 ± 0.25 mm, delivering a positive tactile feel with 5,000,000 operations of rated life. It offers IP67 sealing protection, J bend or Gullwing termination options, and is compatible with lead-free reflow soldering processes. The switch operates reliably across a temperature range of -40°C to +85°C (silver contact) or -40°C to +125°C (gold contact), making it suitable for automotive, medical instruments, industrial electronics, network infrastructure, and elevator applications where sealed, durable switching is essential.