The YTSB001A0352503B is an SMD (Surface Mount Device) tactile switch manufactured by DGBZ. It has a maximum rated current of 50mA, a contact resistance of 100MO, a lifetime of 20000 cycles, an operating voltage of 12V, a switching power of 250gf, a plunger size of 3.5mm, and a contact pitch of 3.55mm. The switch has a black square plunger, and is ROHS compliant.