The **WSBS-1BC-R** is a specialized electronic component categorized as a **Chassis Mount Current Sense Resistor**, specifically part of the Power Metal Strip® series manufactured by Vishay Dale. It is primarily designed for high-current applications such as battery management systems (BMS). --- ### 1. Technical Specifications The following table highlights the core electrical and physical parameters of the WSBS-1BC-R: | Parameter | Specification | | :--- | :--- | | **Resistance Value** | 100 µΩ (0.0001 Ω) | | **Power Rating** | 36 W | | **Tolerance** | ±5% | | **Temperature Coefficient (TCR)** | ±200 ppm/°C | | **Inductance** | < 5 nH | | **Operating Temperature** | -65°C to +170°C | | **Construction** | Solid metal manganese-copper alloy | --- ### 2. Key Features * **Shunt Technology:** It functions as a "shunt," allowing for the measurement of high DC currents by monitoring the voltage drop across the resistor (Ohm's Law: $V = I \times R$). * **High Power-to-Size Ratio:** Despite its relatively small footprint, it can handle significant power due to its solid metal construction. * **Low EMF:** The materials used are chosen to minimize the Thermal Electromotive Force (EMF), ensuring accuracy even as the component heats up. * **All-Welded Construction:** This provides high durability against mechanical shock and thermal cycling. --- ### 3. Internal Construction & Materials The device is not a standard film or wirewound resistor. It is built using: 1. **Resistance Element:** A solid manganese-copper alloy resistive element. 2. **Terminals:** Large copper terminals designed for bolt-on mounting to a chassis or busbar. 3. **Coating:** A specialized silicone or epoxy coating (though often left bare in shunt formats for maximum heat dissipation). --- ### 4. Typical Applications The WSBS-1BC-R is typically found in environments requiring precise monitoring of high-amperage systems: * **Automotive:** Battery sensors and electronic power steering. * **Industrial:** Large scale UPS (Uninterruptible Power Supplies) and welding equipment. * **Energy:** Solar inverters and energy storage systems. ---