SETYEAU0A is a microminiature SPDT key switch featuring a single changeover contact arrangement with non-shorting mode of operation. The switch offers selectable momentary or push-push function with an operating force of 1.5 ± 0.5 N, total travel of 3 mm, and switching travel of 1.5 mm. Electrical specifications include a maximum switching voltage of 24 V DC, maximum switching current of 10 mA DC, and maximum switching power of 240 mW DC, with contact resistance initially = 50 mO and dielectric strength of 500 V. The switch is designed for medical, instrumentation, industrial electronics, and audio electronics applications, offering high reliability with operating life of = 5 × 108 operations for momentary function and = 5 × 105 operations for push-push function, and is RoHS compliant with lead-free soldering compatibility.