The **RW3X-R10-KT** is a precision electronic component, specifically a **high-power, wirewound resistor** manufactured by **RCD Components**. It is designed for applications requiring high stability, power dissipation, and precision resistance. --- ## 1. Technical Specifications The part number follows a specific nomenclature that defines its electronic characteristics: | Feature | Specification | Description | | :--- | :--- | :--- | | **Series** | RW3X | 3-Watt Power Rating (Wirewound) | | **Resistance Value** | R10 | 0.10 $\Omega$ (100 m$\Omega$) | | **Tolerance** | K | $\pm 10\%$ | | **Packaging** | T | Tape and Reel | | **Temperature Coefficient** | 20 ppm to 90 ppm | Depends on specific alloy used | --- ## 2. Key Electronic Characteristics ### A. Wirewound Construction Unlike carbon or thick-film resistors, the RW3X uses a resistive wire (often nickel-chromium or similar alloys) wound around a ceramic core. * **High Power Dissipation:** Can handle higher heat loads (3W) relative to its physical size. * **Low Noise:** Wirewound resistors produce significantly less thermal noise than carbon types. ### B. Low Resistance (R10) The value of **0.10 Ohms** indicates this part is primarily used for **current sensing** or **current limiting**. In a circuit, it allows for the measurement of voltage drop to calculate current ($I = V/R$). ### C. Thermal Stability The "X" in the series often denotes a specific coating (usually silicone or vitreous enamel) that allows the component to operate at elevated temperatures (up to 275°C or higher) without degradation of the resistive element. --- ## 3. Typical Applications Because of its 3W power rating and low resistance, the RW3X-R10-KT is commonly found in: 1. **Power Supplies:** Used in the output stage to monitor current flow. 2. **Motor Controllers:** To sense stalls or over-current conditions. 3. **Battery Management Systems (BMS):** For monitoring charge/discharge rates. 4. **Audio Amplifiers:** Used in emitter/source degeneration to stabilize bias current. --- ## 4. Mechanical Design * **Leads:** Axial leads (suitable for Through-Hole Mounting - THT). * **Coating:** Flameproof coating for safety in failure conditions. * **Marking:** Typically laser-marked with resistance and power rating.