The **TS12S-R_17** is a specific variant of a tactile switch, commonly used in consumer electronics, automotive interfaces, and industrial controls. It is a momentary pushbutton switch designed for PCB (Printed Circuit Board) mounting. Below is a detailed breakdown of its electronic and mechanical specifications. --- ### 1. Key Technical Specifications The "17" in the suffix typically refers to the **actuator height** (17mm), which is critical for fitting into specific enclosure designs. | Parameter | Typical Value | | :--- | :--- | | **Switch Type** | Tactile (Momentary) | | **Circuit** | SPST (Single Pole Single Throw) | | **Current Rating** | 50mA | | **Voltage Rating** | 12V DC | | **Dielectric Strength** | 250V AC for 1 minute | | **Contact Resistance** | ≤ 100mΩ | | **Insulation Resistance** | ≥ 100MΩ (100V DC) | | **Operating Force** | 160gf ± 50gf (Standard) | | **Travel Distance** | 0.25mm ± 0.1mm | --- ### 2. Physical Construction The TS12S-R_17 is built using several layers of materials to ensure durability and tactile feedback. * **Actuator (Stem):** Usually made of high-temperature plastic (PBT or POM). The 17mm height allows it to pass through deep plastic casings. * **Cover:** Metal plate (Stainless steel or Tin-plated iron) that holds the internal components together. * **Contact Dome:** A stainless steel snap-dome that provides the "click" feel and completes the electrical circuit. * **Base:** Heat-resistant resin with terminals molded into it. * **Terminals:** Silver-plated brass for high conductivity and ease of soldering. --- ### 3. Pinout and Circuit Diagram Tactile switches of this series generally feature a 4-pin layout. Even though there are four pins, they are internally connected in pairs to provide mechanical stability on the PCB. ```text (Top View) Pin 1 --- Pin 2 (Internally connected) | | [ Switch ] | <-- Pushing the button connects | | Pin 1/2 to Pin 3/4 Pin 3 --- Pin 4 (Internally connected) ``` --- ### 4. Applications Due to its height and reliability, the TS12S-R_17 is frequently found in: * **Home Appliances:** Microwave oven panels, washing machine controls. * **Computing:** Reset buttons on motherboards or peripheral devices. * **Industrial:** Control panels where the button must protrude through a thick faceplate. ---