Tactile Push Button Micro Switch (6x6x4.3mm)

Description

The Tactile Push Button Micro Switch (6x6x4.3mm) is a fundamental and widely used momentary switch in DIY electronics, robotics, and commercial device repairs. This specific version features a standard 6x6mm square base with an ultra-low 4.3mm height (measured from the bottom of the base to the top of the flat actuator). This low-profile design makes it perfect for tight project enclosures, custom keypads, and surface-level PCB mounting.

Available at Tomson Electronics, this 4-pin switch is engineered with an industry-standard 2.54mm pitch, ensuring it is fully compatible with solderless breadboards and standard through-hole perfboards. It operates as a normally open (NO) single-pole, single-throw (SPST) switch. The circuit remains open until the button is firmly pressed, delivering a distinct, satisfying mechanical "click" to confirm user input.

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Specifications

• Component Type: Tactile Push Button (Momentary)
• Dimensions: 6mm (Length) x 6mm (Width) x 4.3mm (Height)
• Circuit Type: SPST-NO (Single Pole, Single Throw - Normally Open)
• Pin Count: 4 Pins (Through-hole)
• Current/Voltage Rating: 50mA / 12V DC (Typical)
• Contact Resistance: ≤ 50mΩ
• Life Expectancy: ~100,000 cycles

Applications

• Microcontroller Inputs: Perfect for creating digital input signals for user menus on Arduino, ESP32, and Raspberry Pi projects.
• Slim Electronics: Ideal for custom PCBs and 3D-printed enclosures where vertical space is highly restricted.
• Hardware Reset: Wiring a dedicated, low-profile physical reset button to microcontroller boards or custom shields.
• Replacement Parts: Replacing worn-out or broken tactile switches in commercial appliances, remote controls, and toys.

Frequently Asked Questions (FAQ)

Q: Why does the switch have 4 pins if it only acts as a simple ON/OFF connection?
A: The four pins provide necessary mechanical stability when soldered to a PCB, preventing the button from snapping off during repeated presses. Internally, the pins are connected in pairs (typically, the two left pins are linked, and the two right pins are linked). Pressing the button bridges the connection between the left and right sides.

Q: Do I need a resistor to use this with my Arduino?
A: Yes. If you connect this switch directly to a digital input pin without a resistor, the pin will "float" and read random noise when the button is unpressed. You must wire a physical pull-up or pull-down resistor (like a 10kΩ), or simply enable the internal pull-up resistor in your microcontroller's code (e.g., using pinMode(pin, INPUT_PULLUP);).

Q: Will this button stay pressed down after I push it?
A: No, this is a momentary tactile switch. An internal metal dome spring immediately returns the button to its original un-pressed state the moment you remove your finger, breaking the electrical circuit.

Package Includes

• 1 × Tactile Push Button Micro Switch (6x6x4.3mm)