MJTP1138TR is an ultra-compact 6mm surface-mount momentary tactile pushbutton switch featuring single pole-single throw (SPST) configuration with excellent snap dome tactile feedback. The switch is constructed with a high-temperature nylon case, PET film cover with tin-plated brass bracket, silver-plated brass terminals, and phosphor bronze shorting contacts with silver plating, ensuring reliable performance and minimal flux wicking during soldering. Key electrical specifications include a contact rating of 50 mA at 12 VDC, insulation resistance of 100 megohms minimum at 100 VDC, dielectric withstanding voltage of 250 VAC for 1 minute, and contact resistance of 100 milliohms maximum at 5 VDC with 10 mA. The switch operates over a temperature range of -20°C to +70°C with an actuation force of 160 grams ±30 grams, plunger travel of 0.25 mm +0.2/-0.1 mm, and electrical life rated at 100,000 cycles minimum. This product is ideal for consumer electronics, industrial control panels, and portable devices requiring compact, reliable tactile switching with long operating life and high reliability.