The FSMCTA is a low-profile series FSMCT tactile switch designed for surface-mount applications with a compact 5.0 mm × 5.0 mm footprint. It features a contact rating of 20 mA at 15 VDC, an initial contact resistance of 100 milliohms maximum, and an insulation resistance of 100 megaohms at 100 VDC minimum, with dielectric strength rated at 500 VAC for 1 minute. The switch operates over a temperature range of -20°C to +85°C and offers an actuation travel of 0.25 mm with a tolerance of +0.1/-0.2 mm, supporting up to 1,000,000 cycles. The device is constructed with a nickel silver cover, stainless steel silver-clad moving contacts, and a nylon case (UL94V-0), making it suitable for consumer electronics, industrial control panels, and portable devices requiring reliable tactile feedback in space-constrained applications.