Test button switches are momentary push‑button devices used on circuit boards for debugging. These test button switches provide a temporary electrical connection when pressed and release when released. A standard test button switch has a 6mm by 6mm footprint and a 5mm actuator height.

The operating force of test button switches ranges from 100gf to 300gf. Many test button switches have a tactile click to confirm activation. The travel distance of test button switches is typically 0.25mm to 0.5mm.

Test button switches are often placed on the edge of a PCB for easy access. A right‑angle test button switch allows activation from the side of the board. Test button switches with a red actuator are visually distinct from other components.

The electrical rating of test button switches is usually 50mA at 12VDC. Test button switches have a life expectancy of 50,000 cycles minimum. Surface‑mount test button switches are compatible with automated pick‑and‑place assembly.

Through‑hole test button switches provide stronger mechanical retention for handheld use. Test button switches with a gull‑wing lead design resist stress during soldering. A waterproof test button switch rated IP67 suits outdoor or harsh environments.

Test button switches often have a ground pin to prevent ESD damage. The plunger color of test button switches can indicate function (red for reset, green for start). Test button switches with a longer actuator (8mm) are easier to press with gloves.

Using test button switches during development eliminates the need for external jumpers. Test button switches speed up firmware testing and hardware validation. A well‑placed test button switch saves hours of debugging time.