The FSM4JAAH from TE Connectivity / Alcoswitch Brand is through hole mounting, single pole single throw (SPST) tactile switch with NO contact configuration, Off-Mom switch function and PC pin termination. This top actuated switch has 5.00mm actuator height and 160gf operating force. Outline dimensions of this switch are: 6.00mm x 6.00mm. The FSM4JAAH tactile switch has copper alloy contacts with silver plating and 0.05A @ 12VDC contact rating. Operating temperature range is from -40°C to 105°C.