The **TS-334-R** is a specific model of a **Tactile Switch** (or Tact Switch). These are momentary push-button switches commonly used in low-power interface circuits to provide physical feedback to the user. Below is a breakdown of its electronic specifications, physical construction, and typical applications. --- ### 1. Key Technical Specifications While specific manufacturers (like Mitsumi or generic electronic component producers) may vary slightly, the standard "334" series generally adheres to the following parameters: | Parameter | Typical Value | | :--- | :--- | | **Switch Type** | Momentary (Normally Open) | | **Contact Rating** | 50mA @ 12V DC | | **Insulation Resistance** | 100MΩ min. at 100V DC | | **Dielectric Strength** | 250V AC for 1 minute | | **Contact Resistance** | 100mΩ max. | | **Operating Force** | 160gf to 250gf (grams-force) | | **Travel (Stroke)** | 0.25mm ± 0.1mm | --- ### 2. Physical Construction The "R" suffix often denotes specific mounting or packaging styles (such as **Right Angle** mounting or **RoHS** compliance). * **Actuator:** The button itself, usually made of plastic. * **Contact Dome:** A stainless steel or phosphor bronze disc that snaps down to complete the circuit, providing the "click" sound and feel. * **Terminals:** Typically 4-pin or 2-pin configurations. In 4-pin models, pins are often connected in pairs to provide mechanical stability on the PCB. * **Housing:** High-temperature thermoplastic (LCP or Nylon) capable of withstanding wave soldering or reflow processes. --- ### 3. Circuit Diagram Internally, the switch acts as a simple bridge. When the button is pressed, the internal dome connects the input terminals to the output terminals. ```text Terminal A1 ---------| |--------- Terminal B1 | | (Dome) Terminal A2 ---------| |--------- Terminal B2 ``` *Note: A1 and A2 are usually internally connected; B1 and B2 are usually internally connected.* --- ### 4. Common Applications Due to their small footprint and reliability, these switches are found in: 1. **Consumer Electronics:** Volume buttons on smartphones, power buttons on remote controls. 2. **Computing:** Reset buttons on motherboards or peripheral input devices. 3. **Industrial:** Control panels and membrane keypads. 4. **Prototyping:** Breadboard-friendly tactile inputs for Arduino/Raspberry Pi projects.