The Kemet SSHB21HS-05440 is a 0.040 inch (1mm) high miniature tactile switch designed for use in computers, keyboards, PDAs, cell phones, and other applications. It is a right angle, surface mount switch with a single pole, normally open contact, a plunger activated switch, and a travel distance of 0.050 inch (1.27mm). This switch has an operating force of 158 gram-force (3.56 oz-force) and a life expectancy of 1 million cycles. It also meets the requirements of MIL-PRF-8805C, Type I and meets the requirements of IEC 60335-1. The SSHB21HS-05440 is rated for a maximum operating temperature of +85°C and a rated voltage of 6.5 volts DC.