The YTS1K0171HBT00 is a Surface-Mounted Device (SMD) tactile switch manufactured by YIYUAN that is RoHS certified. It has a one million cycles long life expectancy, a contact resistance of 50m O Max, and an electrical rating of DC128V 0.1A. It has a 0.5N operating force, a square momentary push button design, and a contact bounce time of 5ms Max. It is a single-pole single through-hole device and is typically used in switches, medical equipment, industrial automation, audio/visual devices, and communication devices.