12×12×7.3mm 4-Pin Tactile Push Button Switch – Yellow Cap, Momentary Self-Reset
VAT inclusive; Computed calculations added locally.
Overview
This compact tactile push-button switch is designed for reliable user input in electronic circuits and PCB projects. Its standard 12 × 12mm square body and 7.3mm height make it easy to integrate into many prototype and embedded electronics designs.
The switch uses a 4-pin through-hole/DIP mounting configuration. Internally, the two pins on each side are electrically connected, while pressing the actuator momentarily connects the switch contacts. This makes it straightforward to use as a digital input, reset button, menu control, or general-purpose momentary switch.
The yellow actuator cap provides clear visual identification and a convenient pressing surface. Its self-resetting momentary operation means the switch returns to its normal state after the button is released.
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Product Technical Information
Technical Details
The 12×12×7.3mm tactile push-button switch is a standard-sized PCB switch designed for momentary user input. Its compact footprint makes it suitable for control panels, development boards, embedded systems, and electronic prototypes.
Features
- 12 × 12 × 7.3mm compact form factor.
- 4-pin through-hole/DIP mounting.
- Momentary tactile switching action.
- Self-resetting operation.
- Normally-open switching configuration.
- Black body with yellow actuator cap.
- Square-head button design.
- Suitable for PCB mounting.
- Similar form factor to B3F-4055 style switches.
- Provides tactile feedback when pressed.
Applications
- Arduino projects.
- ESP32 and microcontroller projects.
- PCB prototypes.
- Reset buttons.
- User-interface controls.
- Robotics projects.
- Electronic control panels.
- DIY electronics.
- Embedded systems.
- Educational electronics projects.
How to Use
- Insert the four switch pins into the appropriate PCB holes.
- Solder the switch securely to the PCB.
- Connect one electrically common pin pair to the circuit input and the other pair to the required circuit connection.
- Use an appropriate pull-up or pull-down arrangement when connecting to a microcontroller input.
- Press the yellow actuator to momentarily close the switch contacts.
- Release the button to allow the switch to return to its normal open state.
Important Notes
- This is a momentary switch, not a latching ON/OFF switch.
- Two pins on each side of a typical 4-pin tactile switch are internally connected; check continuity before PCB installation if the exact variant is uncertain.
- Do not exceed the switch's rated voltage/current.
- Avoid excessive force when pressing or installing the actuator.
- The product is described as B3F-4055 style/resembling B3F-4055; do not assume it is an original OMRON-branded component unless explicitly specified.
- Product color and appearance may vary slightly between batches.
Frequently Asked Questions
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