The **KNP-R3AU100RHTB** is a specific electronic component belonging to the **Resistor** family. Based on the part numbering convention (common for manufacturers like TE Connectivity or Yageo), it is identified as a **Wirewound Resistor**. ### 1. Component Specifications The following table breaks down the technical characteristics of this part: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Type** | Wirewound | Constructed by winding metal wire on an insulating core. | | **Resistance** | 100 $\Omega$ | The electrical resistance value (100 Ohms). | | **Power Rating** | 0.3W - 0.5W | Typical for small form factor wirewound resistors. | | **Tolerance** | $\pm$ 5% | Standard precision for general purpose power circuits. | | **Package/Case** | Axial Leaded | Cylindrical body with leads extending from each end. | | **Coating** | Flameproof | Designed not to ignite under severe overload conditions. | --- ### 2. Physical Construction A wirewound resistor of this series typically consists of: * **Core:** A high-grade ceramic rod (usually Alumina). * **Element:** A resistive wire alloy (like Nickel-Chromium) wound around the core. * **End Caps:** Steel caps pressed onto the ends of the core to connect the wire to the leads. * **Coating:** A silicone or cement-based coating that provides high insulation and heat resistance. --- ### 3. Key Applications Because it is a wirewound resistor, it excels in specific environments where standard carbon film resistors might fail: 1. **Surge Protection:** Better at handling high-energy pulses and temporary overloads. 2. **Power Supplies:** Used in inrush current limiting and snubber circuits. 3. **Industrial Controls:** Suitable for high-temperature environments due to the flameproof coating. 4. **Audio Equipment:** Sometimes used in crossover networks for its stability. --- ### 4. Part Number Breakdown (Example) While specific to the manufacturer, the code usually follows this logic: | Segment | Meaning | | :--- | :--- | | **KNP** | Series Name (Wirewound Resistor) | | **R3** | Power Rating / Size Indicator | | **100R** | Resistance Value (100 Ohms) | | **H/T/B** | Packaging Type (e.g., Tape/Box, High Temp) |