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SPST Momentary OFF - (ON) Button Switch

The TS4-3R series momentary SPST tact switch with diameter 8mm and 13mm height size.


An SPST (Single Pole Single Throw) momentary OFF-(ON) button switch is a simple yet highly functional component widely used in various electronic applications. This type of switch is normally in the "OFF" state and only turns "ON" when pressed, reverting to "OFF" once released. Here’s a detailed overview in 300 words:

  • Switch type: SPST momentary

  • Contact resistance: 50mΩ Max

  • Operating force: 130±50gf

  • Actuator diameter: 9mm

  • Insulation resistance: 100MΩ Min

  • Dielectric strength: 500V AC (50~60Hz) for 1 minute

  • Life (nominal current & voltage): 100000 cycle

  • Temperature range: -10ºC to +65ºC

  • Solderability: 235ºC for 5 seconds

  • Travel: 0.80mm Max

  • Colour: White


1. Momentary Action: The switch only remains "ON" while being pressed, providing temporary activation.

2. Simplicity: Single Pole Single Throw (SPST) operation ensures straightforward integration into circuits.

3. Durability: Designed to withstand extensive use, ensuring reliable performance over many cycles.

4. Compact Size: Available in various sizes, including compact designs for space-constrained applications.




HK FVWIN Industrial Company is a leading manufacturer in high quality electronics switches,sockets.our products application scope including electronic equipment, computer peripheral, tele-communication, home appliance, medical equipment, industrial equipment, pro AV etc; Our product covers Illuminated LED tact switches,Illuminated push switches,push button switches, toggle switches and AC socket are all with certified quality approval.

FVWIN meets its customers' highest demands through certified quality, environmental and safety management systems;we also offer OEM and ODM etc strategic customized service.





Our illuminated led tact switches has widespread applications for audio apparatus, medical instruments,lighting consoles,safe monitoring system,cashier devices,broadcasting system.

  • Module Synthesizers: Used for triggering sounds, navigating menus, or adjusting parameters.

  • Consumer Electronics: Common in remote controls, gaming controllers, and other devices requiring temporary activation.

  • Industrial Controls: Suitable for machinery and control panels where momentary input is needed.

  • Medical Devices: Used in interfaces where temporary user input is critical.

1. Soldering: Ensure proper soldering techniques to avoid cold solder joints.

2. Testing: After installation, verify the switch’s operation to ensure it provides the desired momentary function.