TE Connectivity FSM4JRT Tactile Switch Through Hole Round 160 gf 50mA 24VDC

The FSM4JRT is a compact, black pushbutton tactile switch manufactured by TE Connectivity under the ALCOSWITCH series. It features a single-pole single-throw normally open (SPST-NO) circuit configuration, making it ideal for momentary contact applications. The switch is top-actuated with a round actuator and is designed for through-hole mounting, offering a standard 6.00mm x 6.00mm footprint and a vertical actuator height of 5.00mm.

Engineered for reliability, the FSM4JRT supports a contact rating of 0.05A at 24VDC and has a mechanical life of up to 100,000 cycles. It requires an operating force of 160gf and provides a tactile response with a travel distance of 0.25mm. The actuator is made from durable polyamide (PA66), and the switch contacts are plated with silver over a copper alloy base, ensuring consistent electrical performance.