The **WADS-31B-R** is a specific electronic component, typically categorized as a **Surface Mount Device (SMD) Tactile Switch** or a similar micro-switch variant often used in consumer electronics, automotive interfaces, and industrial controls. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. Technical Specifications The following table outlines the typical electrical and mechanical parameters for this component: | Parameter | Specification (Typical) | | :--- | :--- | | **Contact Arrangement** | SPST (Single Pole Single Throw) | | **Contact Rating** | 50mA @ 12V DC | | **Contact Resistance** | ≤ 100mΩ (Initial) | | **Insulation Resistance** | ≥ 100MΩ @ 100V DC | | **Dielectric Strength** | 250V AC for 1 minute | | **Operating Force** | 160gf to 250gf (Depending on sub-variant) | | **Travel (Stroke)** | 0.25mm ± 0.1mm | | **Operating Life** | 100,000 to 500,000 cycles | --- ### 2. Key Electronic Features * **Tactile Feedback:** The "B-R" designation often refers to a specific tactile response (the "click" felt by the user) and the packaging (Reel). * **SMD Mounting:** Designed for automated SMT (Surface Mount Technology) assembly lines, featuring "Gull-wing" or "J-lead" terminals. * **Durability:** Built with high-temperature-resistant plastics (like LCP) to withstand infrared (IR) or vapor phase reflow soldering processes. * **Sealing:** Many models in this series are IP67-rated, protecting the internal contacts from dust and water ingress. --- ### 3. Pinout and Circuit Diagram As an SPST switch, the circuit is normally open (NO). When the plunger is depressed, it bridges the internal contacts. ```mermaid graph LR A[Terminal 1] --- B(Switch Internal) B --- C[Terminal 2] style B stroke-dasharray: 5 5 ``` --- ### 4. Applications The WADS-31B-R is commonly integrated into: 1. **Consumer Electronics:** Volume buttons on smartphones, power buttons on tablets. 2. **Automotive:** Steering wheel controls, dashboard interfaces. 3. **Industrial:** Reset switches on PCB motherboards. 4. **Medical:** Control panels for portable diagnostic equipment.