The **WPT-102-R** is a specific electronic component typically categorized as a **Surface Mount Device (SMD) Tactile Switch**. These components are widely used in consumer electronics to provide a physical interface for users to input commands. --- ### 1. Key Technical Specifications The WPT-102-R is designed for high reliability and a small footprint on Printed Circuit Boards (PCBs). | Feature | Specification | | :--- | :--- | | **Component Type** | Tactile Switch | | **Mounting Type** | SMD (Surface Mount Device) | | **Orientation** | Right Angle (Horizontal actuation) | | **Contact Arrangement** | SPST (Single Pole Single Throw) | | **Contact Rating** | Usually 50mA, 12V DC | | **Operating Force** | Typically 160gf to 250gf | | **Life Cycle** | ~50,000 to 100,000 cycles | --- ### 2. Internal Electronic Structure The switch functions as a momentary "Normally Open" (NO) circuit. * **The Dome (Contact Plate):** Usually made of stainless steel or phosphor bronze. When pressed, it collapses to bridge two stationary contacts. * **Terminals:** The "R" in the suffix often denotes a **Right Angle** configuration, meaning the solder pads are positioned so the button faces the edge of the PCB. * **Housing:** High-temperature thermoplastic (LCP or Nylon) to withstand reflow soldering temperatures. --- ### 3. Circuit Integration In a typical electronic schematic, the WPT-102-R is used as an input trigger for a Microcontroller (MCU). ```cpp // Example: Arduino Logic for a Tactile Switch const int buttonPin = 2; int buttonState = 0; void setup() { pinMode(buttonPin, INPUT_PULLUP); // Uses internal resistor } void loop() { buttonState = digitalRead(buttonPin); if (buttonState == LOW) { // Switch is pressed, circuit is closed to GND } } ``` --- ### 4. Common Applications Due to its right-angle design and tactile feedback, the WPT-102-R is commonly found in: 1. **Handheld Devices:** Power buttons or volume rockers on the sides of devices. 2. **Wearables:** Reset buttons inside smartwatches or fitness trackers. 3. **Industrial Controls:** User interface buttons on compact control panels. 4. **Computer Peripherals:** Side buttons on gaming mice.