The **W2TS-111-R2** is a specialized electronic component, typically categorized as a **Surface Mount (SMT) Tactile Switch**. These switches are designed for human-machine interface (HMI) applications where space is limited and tactile feedback is essential. --- ## 1. Technical Specifications Below are the general electrical and mechanical characteristics associated with the W2TS series: | Parameter | Specification | | :--- | :--- | | **Switch Type** | Tactile / Momentary | | **Mounting Type** | Surface Mount (SMD / SMT) | | **Contact Rating** | 50mA @ 12V DC (Typical) | | **Actuation Force** | 160gf to 250gf (varies by sub-model) | | **Travel Distance** | 0.25mm ± 0.1mm | | **Life Expectancy** | 100,000 to 1,000,000 cycles | | **Operating Temp** | -25°C to +70°C | --- ## 2. Component Structure The "R2" suffix usually indicates specific packaging or revisions (often **Tape & Reel** packaging for automated pick-and-place assembly). ### Key Internal Parts: 1. **Actuator (Stem):** The physical button pressed by the user. In the W2TS series, this is often a low-profile plastic or silicon piece. 2. **Contact Dome:** A metal snap-action disc that provides the "click" feel and completes the electrical circuit when depressed. 3. **Terminal Leads:** Silver-plated or gold-plated copper alloy pins that are soldered to the PCB. 4. **Base/Housing:** High-temperature thermoplastic (LCP) capable of withstanding reflow soldering temperatures. --- ## 3. Applications The W2TS-111-R2 is commonly found in the following industries: * **Consumer Electronics:** Mobile phones, remote controls, and wearable devices. * **Industrial:** Control panels and membrane switch interfaces. * **Medical:** Handheld diagnostic tools. * **Computing:** Mouse buttons or reset switches on motherboards. --- ## 4. Soldering Profile As an SMT component, the part is designed for **Lead-Free Reflow Soldering**. ```markdown Reflow Guidelines: - Preheat: 150°C to 200°C (60-120 seconds) - Peak Temp: 260°C Max (5-10 seconds) - Cooling: Natural or forced air ```