The **KMMLS-3B1-R** is a specific model of a **Miniature Slide Switch**, typically manufactured by companies like **STMicroelectronics** or specialized switch component suppliers (often part of the KM series). These switches are designed for compact electronic devices where space is at a premium. --- ### 1. Key Technical Specifications Below are the typical electronic and mechanical characteristics of the KMMLS-3B1-R: | Parameter | Specification | | :--- | :--- | | **Switch Type** | Slide Switch | | **Circuit Configuration** | SPDT (Single Pole Double Throw) | | **Switch Function** | On-On | | **Current Rating** | ~300mA at 6V DC (Typical) | | **Contact Resistance** | 20 mΩ Max (Initial) | | **Insulation Resistance** | 100 MΩ Min at 500V DC | | **Dielectric Strength** | 500V AC for 1 minute | | **Actuator Type** | Side Actuated (Right Angle / Side Slide) | | **Mounting Type** | Through-Hole (PCB Mount) | --- ### 2. Functional Design The "3B1-R" suffix typically refers to the physical orientation and terminal layout: * **SPDT Logic:** It has one common terminal and two output terminals. Sliding the actuator connects the common pin to either the left or right pin. * **Right-Angle (R):** The "R" usually indicates a **Right-Angle** mounting. This means the actuator slides parallel to the PCB, but the pins are bent at 90 degrees to fit into the board edge. * **Miniaturization:** It is designed for "Micro" applications, meaning it has a very low profile (usually under 2mm-5mm in height). --- ### 3. Applications Due to its small footprint and low current rating, it is commonly used in: 1. **Consumer Electronics:** Power switches for Bluetooth headphones, wearable devices, and small remote controls. 2. **Logic Selection:** Setting "Master/Slave" modes or hardware addresses on a circuit board. 3. **Testing Equipment:** Handheld multimeters or diagnostic tools for toggling between modes. 4. **Battery Powered Devices:** Used as a physical "Hard Off" switch to prevent parasitic battery drain. --- ### 4. Circuit Diagram Representation In a schematic, the KMMLS-3B1-R is represented as follows: ```text [ Terminal 1 ] <--- Position A | [ Common ] --o | [ Terminal 2 ] <--- Position B ``` ---