FSM12JH is a tactile pushbutton switch designed for through-hole printed circuit board applications. It features a vertical mount orientation with an extended round actuator profile and operates with a single pole-single throw (SPST) configuration at a contact rating of 50mA. The switch is constructed with a nylon case and nylon actuator with white coloring, and incorporates silver contact plating for reliable electrical performance. The actuator has a length of 4.40 mm (0.173 inches), providing a compact form factor suitable for space-constrained applications. This switch is ideal for consumer electronics, industrial control panels, and general-purpose switching applications requiring tactile feedback and durability.