The **SVB-5WC-R/E** is a specific model within a series of **Signal Relays** manufactured by **Fujitsu** (formerly Takamisawa). These relays are widely used in telecommunications, audio/visual equipment, and security systems due to their compact size and high sensitivity. Below is a breakdown of its technical specifications and electronic characteristics. --- ### 1. General Specifications The SVB series is characterized by its high-density mounting capability and low power consumption. | Feature | Specification | | :--- | :--- | | **Relay Type** | Polarized Latching / Non-Latching (Series dependent) | | **Contact Form** | 1 Form C (SPDT - Single Pole Double Throw) | | **Coil Voltage** | 5V DC | | **Max Switching Current** | 1A | | **Max Switching Voltage** | 125V AC / 60V DC | | **Terminal Type** | Through-hole (PCB Mount) | --- ### 2. Key Internal Components & Materials * **Contact Material:** Gold-overlay silver alloy. The gold plating ensures low contact resistance and prevents oxidation, making it ideal for switching low-level signals (dry circuits). * **Coil System:** High-sensitivity permanent magnet system. The "5WC" designation typically refers to a **5V nominal coil voltage** with a specific power rating (usually around 150mW to 200mW). * **Enclosure:** Washable plastic seal. The "E" suffix often indicates an environmentally friendly or epoxy-sealed construction that allows the PCB to be cleaned after soldering without damaging the internal contacts. --- ### 3. Pin Configuration (Typical 1 Form C) The device generally follows a standard footprint for signal relays: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1 & 6** | Coil | Connection for the 5V control signal. | | **2** | Common (COM) | The moving part of the switch. | | **3** | Normally Closed (NC) | Connected to COM when no power is applied. | | **4** | Normally Open (NO) | Connects to COM when the coil is energized. | --- ### 4. Application Use Cases * **Telecommunications:** Used in PABX systems and modems for line switching. * **Audio Equipment:** Switching low-level audio signals between inputs without introducing significant noise or distortion. * **Measurement Tools:** Integrated into handheld multimeters or oscilloscopes for range switching. --- ### 5. Part Number Breakdown While manufacturer codes vary slightly, the "SVB-5WC-R/E" typically breaks down as: 1. **SVB:** Series Name (Subminiature Signal Relay). 2. **5:** 5V DC Nominal Coil Voltage. 3. **WC:** High sensitivity or specific coil winding type. 4. **R/E:** Packaging or environmental compliance (RoHS) / Sealing type.