The **WSBS-162B-R/Q** is a specialized electronic component, specifically a **Power Shunt Resistor** designed for high-current sensing applications. It is part of the Power Metal Strip® series, typically manufactured by Vishay Dale. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the WSBS-162B-R/Q: | Feature | Specification | | :--- | :--- | | **Resistance Value** | Extremely Low (typically 100 μΩ to 500 μΩ) | | **Power Rating** | 36 W (high power capability) | | **Tolerance** | ± 5.0% (standard for this series) | | **Temperature Coefficient** | Low TCR (typically < ± 200 ppm/°C) | | **Construction** | Solid metal manganese-copper alloy resistive element | | **Mounting Type** | Battery Post / Bolt-on (Specific "B" shape) | --- ### 2. Physical Design & Construction The "WSBS" series is known for its unique physical geometry compared to standard surface-mount resistors. * **Bus Bar Geometry:** The part is shaped as a "Bus Bar" shunt. This allows it to be bolted directly to battery terminals or high-current bus bars. * **Material:** It uses a solid metal resistive element. This provides high stability and allows the component to withstand massive current surges without melting or changing resistance. * **Welded Construction:** The resistive element is electron-beam welded to copper terminals to ensure the lowest possible contact resistance. --- ### 3. Functional Application In a circuit, the WSBS-162B-R/Q acts as a **Current Sensor**. 1. **Ohm’s Law:** As high current ($I$) flows through the low-resistance ($R$) shunt, a small voltage ($V$) is dropped across it ($V = I \times R$). 2. **Monitoring:** This small voltage signal is sent to a Battery Management System (BMS) or an ADC (Analog-to-Digital Converter). 3. **Calculation:** The system calculates the exact amperage based on the known resistance value of the shunt. ### 4. Common Use Cases * **Automotive:** Intelligent Battery Sensors (IBS) for monitoring lead-acid or lithium-ion car batteries. * **Energy Storage:** Large-scale UPS (Uninterruptible Power Supply) systems. * **Industrial:** Heavy machinery motor control and high-current power supplies. --- ### 5. Identification Code Breakdown The part number follows a specific nomenclature: * **WSBS:** Power Metal Strip Battery Shunt. * **162B:** Physical size/frame dimension (roughly 1.6 inches in length). * **R/Q:** Specific terminal plating or packaging designations (often referring to tinned terminals for corrosion resistance).