The **WJM-1BB-R** is a specific electronic component typically identified as a **Miniature Toggle Switch** (often part of the WJM series by manufacturers like Well Buying or similar industrial suppliers). Below is a detailed breakdown of its technical specifications and characteristics. --- ### 1. General Specifications The WJM-1BB-R is designed for PCB mounting and is used primarily for signal switching or low-power applications. | Feature | Specification | | :--- | :--- | | **Switch Type** | Toggle Switch | | **Circuitry** | SPDT (Single Pole Double Throw) | | **Switch Function** | ON-ON (2 positions) | | **Mounting Type** | Through-Hole (Right Angle/Vertical depending on suffix) | | **Terminal Material** | Copper Alloy, Silver or Gold plated | | **Actuator Style** | Standard Round Toggle | --- ### 2. Electrical Characteristics These parts are engineered for reliability in control panels and telecommunications equipment. | Parameter | Value | | :--- | :--- | | **Contact Rating** | 2A @ 250VAC / 5A @ 120VAC or 28VDC | | **Electrical Life** | 30,000 to 50,000 make-and-break cycles | | **Contact Resistance** | 10 mΩ max. initial @ 2-4VDC, 100mA | | **Insulation Resistance** | 1,000 MΩ min. | | **Dielectric Strength** | 1,000 Vrms min. @ sea level | --- ### 3. Materials and Environmental Data The construction of the WJM series focuses on durability and heat resistance during the soldering process. * **Case & Bushing:** Glass-filled nylon 6/6, flame retardant, heat stabilized (UL94V-0). * **Actuator:** Brass, chrome plated with internal O-ring seal (standard in many "R" variants). * **Switch Support:** Brass or Steel, tin plated. * **Operating Temperature:** -30°C to +85°C. --- ### 4. Part Number Breakdown (WJM-1BB-R) While naming conventions can vary slightly by manufacturer, the code usually breaks down as follows: * **WJM:** Series identifier (Miniature Toggle). * **1:** Number of poles (1 = Single Pole). * **BB:** Function code (typically represents ON-ON). * **R:** Terminal or RoHS designation (often indicates **Right Angle** PCB mount or **RoHS Compliance**). --- ### 5. Common Applications * **Telecommunications:** Network hubs and routers. * **Instrumentation:** Test equipment and handheld devices. * **Medical Equipment:** Control interfaces. * **Audio/Visual:** Mixing boards and signal routing.