The **WADS-2BB-R** is a specific electronic component primarily categorized as a **Surface Mount (SMT) Detection Switch** or a Micro-action Switch. These are commonly used in consumer electronics to detect physical states such as the closing of a lid, the insertion of a card, or the position of a mechanical lever. --- ### 1. Technical Specifications Below are the typical technical parameters for the WADS series detection switches: | Feature | Specification | | :--- | :--- | | **Type** | Detection Switch (Surface Mount) | | **Circuit** | SPST (Single Pole Single Throw) | | **Switch Function** | Normally Open (Off-Mom) | | **Contact Rating** | 1mA to 10mA @ 5V DC | | **Operating Force** | 35gf to 50gf (grams-force) | | **Mounting Type** | SMT (Surface Mount Technology) | | **Orientation** | Right Angle / Horizontal | --- ### 2. Key Internal Components The WADS-2BB-R consists of several precision-engineered parts that allow it to function within a very small footprint: * **Actuator (Lever/Button):** The moving part that receives physical pressure. In the "R" (Right Angle) configuration, this usually protrudes horizontally. * **Contact Terminals:** Usually made of a copper alloy with **Silver or Gold plating** to ensure high conductivity and prevent oxidation. * **Base/Housing:** High-temperature resistant thermoplastic (like LCP) designed to withstand the heat of **Reflow Soldering**. * **Internal Spring:** Provides the tactile feedback and ensures the switch returns to its "Open" state once pressure is removed. --- ### 3. Application Examples Because of its small size and reliability, this part is frequently found in: 1. **Optical Disc Drives:** Detecting if a tray is open or closed. 2. **Smartphones/Tablets:** Detecting the insertion of a SIM card or SD card tray. 3. **Industrial Sensors:** End-of-travel detection for small motorized components. 4. **Wearables:** Detecting if a device is docked in its charging cradle. --- ### 4. Implementation Example (Code) If you are integrating this switch into a microcontroller project (like an Arduino or ESP32), you would treat it as a digital input with a pull-up resistor. ```cpp // Example code for detecting switch state const int switchPin = 2; // Pin connected to WADS-2BB-R void setup() { pinMode(switchPin, INPUT_PULLUP); // Use internal pull-up Serial.begin(9600); } void loop() { int state = digitalRead(switchPin); if (state == LOW) { Serial.println("Object Detected / Switch Pressed"); } else { Serial.println("No Detection / Switch Open"); } delay(100); } ```