The YTS-B019-2 Tactile Switch manufactured by YIYUAN is a black round button brick nogging SPST SMD tactile switch with no SMD. It has a rated current of 50mA, a diameter of 6mm across, a resistance of 100MO, a capacitance of 100000 pF, a rated voltage of 12V, a rated power of 250gf@+/-50gf, a minimum travel of 4mm, a maximum travel of 2.5mm, and is RoHS compliant.