The **18TS-56A-R** typically refers to a specific series of **Tactile Switches**. These are momentary push-button switches commonly used in consumer electronics, automotive interfaces, and industrial control panels. Below is a detailed breakdown of its electronic and mechanical specifications. --- ### 1. General Specifications Tactile switches of this nature are designed for low-power signals. They provide "tactile feedback" (a physical click) to the user when pressed. | Feature | Typical Specification | | :--- | :--- | | **Switch Type** | Tactile (Momentary SPST) | | **Contact Arrangement** | Normally Open (NO) | | **Mounting Type** | Surface Mount (SMD) or Through-Hole (Model dependent) | | **Operation Force** | 160gf to 260gf (Grams-force) | | **Travel Distance** | 0.25mm ± 0.1mm | ### 2. Electrical Characteristics These parts are designed for DC signal switching, not for power distribution. * **Rated Voltage:** 12V DC * **Rated Current:** 50mA * **Contact Resistance:** $\le$ 100m$\Omega$ (Initial) * **Insulation Resistance:** $\ge$ 100M$\Omega$ (at 100V DC) * **Dielectric Strength:** 250V AC for 1 minute ### 3. Physical Construction The part number suffix often denotes specific physical dimensions or packaging. 1. **Actuator:** The button itself, usually made of plastic (e.g., PPA or Nylon). 2. **Cover/Frame:** Often stainless steel or tin-plated brass to provide structural integrity. 3. **Contact Dome:** A stainless steel dome that snaps down to complete the circuit. 4. **Terminals:** Silver-plated brass for high conductivity and ease of soldering. ### 4. Application Examples The **18TS-56A-R** is frequently found in: * **Household Appliances:** Microwave ovens, washing machine control panels. * **Consumer Tech:** Remote controls, camera shutter buttons, calculators. * **Computer Peripherals:** Reset buttons on motherboards or routers. --- ### Code Reference (Schematic Symbol) In EDA software (like KiCad or Altium), the footprint for this switch is typically represented as a 2-pin or 4-pin momentary switch. ```cpp // Typical Pin Configuration (Internal logic) Pin 1 ----| / |---- Pin 2 | / | Pin 3 ----| / |---- Pin 4 // Pins 1-2 and 3-4 are usually internally connected. ```