The ST-1101SE-4.3 with Tactile Switches SMD RoHS is a surface mount, tactile switch manufactured by RI SHENG. It has a travel of 0.5 mm, an operating force of 3.5 N, and a rated voltage of 20 V DC. It is made from high temperature thermoplastic, is RoHS compliant, and is designed for long life and dependable performance. The switch is ideal for applications in aerospace, automotive, computer, household appliance, and medical industries.