The **WMS2-11-R/Q** is a specific model of a **Miniature Rocker Switch** typically used in industrial and consumer electronics. These components are designed for high reliability and space-saving applications. --- ### 1. Key Technical Specifications Below are the general electronic and physical characteristics of this part: | Parameter | Value/Description | | :--- | :--- | | **Switch Function** | SPDT (Single Pole Double Throw) | | **Switch Action** | ON-ON (Latching) | | **Contact Rating** | 3A @ 125VAC or 1.5A @ 250VAC | | **Contact Resistance** | 20 mΩ Max (Initial) | | **Insulation Resistance** | 1,000 MΩ Min @ 500VDC | | **Dielectric Strength** | 1,000 Vrms @ Sea Level | | **Operating Temp** | -30°C to +85°C | --- ### 2. Breakdown of the Model Code The part number can be decoded to understand its physical attributes: * **WMS2**: Series identifier (typically referring to a sub-miniature or miniature rocker series). * **11**: Circuit configuration. In this series, "11" usually denotes an **SPDT** (Single Pole, Double Throw) circuit with two positions (On-On). * **-R**: Terminal type. Usually indicates **Right Angle** PC through-hole terminals, allowing the switch to be mounted horizontally on a PCB. * **-Q**: Contact material. Typically signifies **Silver Plating**, which is ideal for power-level switching (as opposed to gold plating for low-level/dry circuits). --- ### 3. Component Construction The switch is composed of four main electronic/mechanical sections: 1. **Actuator (Rocker):** Usually made of Nylon (PA66) or similar polymer. This is the interface the user moves. 2. **Contact Mechanism:** A movable "seesaw" contact inside that completes the circuit between the common pin and one of the two output pins. 3. **Terminal Pins:** Copper alloy with silver plating. These are designed for soldering directly into a Printed Circuit Board (PCB). 4. **Housing/Case:** Made of Diallyl Phthalate (DAP) or high-strength plastic to withstand soldering heat and mechanical stress. --- ### 4. Circuit Diagram (SPDT) The electrical logic for the "11" configuration (ON-ON) is as follows: ```text Position 1: Pin 2 (Common) connected to Pin 1 Position 2: Pin 2 (Common) connected to Pin 3 ```