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.
| Type |
Tactile Switch |
| Switch Function |
Off-Mom |
| Orientation |
Straight |
| Actuator Length |
0.055inch |
| Operating Force |
1.57n |
| Actuator Diameter |
3.5mm |
| Actuator Material |
Resin, Polyacetal |
| Actuator Type |
Standard |
| Contact Current Rating |
50mA |
| Contact Material |
Copper Alloy |
| Contact Plating |
Silver |
| Current Rating |
50mA |
| DC Rated Voltage |
12v |
| Depth |
6.19mm |
| Electrical Life |
100000Cycles |
| ELV |
Compliant |
| Illumination Type |
Non-Illuminated, Illuminated |
| Lead Free |
Lead Free |
| Length |
6.19mm |
| Max Current Rating |
50mA |
| Max Operating Temperature |
105°C |
| Max Voltage Rating (DC) |
12v |
| Mechanical Life |
100000Cycles |
| Min Operating Temperature |
-35°C |
| Mount |
Through Hole |
| Number of Positions |
2 |
| Package Quantity |
1 |
| Package/Case |
Radial |
| Packaging |
Tape and Reel |
| Radiation Hardening |
No |
| Reach SVHC Compliant |
Unknown |
| RoHS Compliant |
Yes |
| Series |
FSMJRT |
| Switch Travel |
0.25mm |
| Termination |
PC Pins |
| Throw Configuration |
SPST |
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