The PTS645SL43-2LFS is a 6 mm tactile switch from the PTS645 Series designed for momentary-action applications with SPST normally-open contact arrangement and straight PC pin termination. This compact switch features a 4.3 mm actuator height, 130 grams actuation force (L option), and is available in both thru-hole and surface-mount configurations with silver-plated contacts. The switch is rated for 50 mA at 12 V DC with a maximum contact resistance of 100 mO and offers a dielectric strength of 250 V AC minimum, supporting 100,000 operations over its lifetime. Operating across a temperature range of -20°C to 70°C, the PTS645SL43-2LFS is RoHS compliant and ideal for consumer products, instrumentation, computer products, and industrial applications requiring reliable tactile feedback.