The **F1S-R100-JT** is a high-precision, flameproof metal film power resistor manufactured by **Stackpole Electronics (SEI)**. It is designed for applications where space is limited but power handling and reliability are critical. --- ### ## Technical Specifications Below are the primary electronic characteristics of the F1S-R100-JT: | Parameter | Value / Description | | :--- | :--- | | **Resistance Value** | 0.1 $\Omega$ (R100) | | **Tolerance** | $\pm$ 5% (J) | | **Power Rating** | 1 Watt (Small/Miniature size) | | **Package / Case** | Axial Leaded | | **Temperature Coefficient** | $\pm$ 200 ppm/°C | | **Voltage Rating** | 350V | | **Operating Temperature** | -55°C to +155°C | --- ### ## Key Features 1. **Miniature Size (F1S Series):** The "F" indicates the series, and the "S" stands for "Small." This resistor provides a 1-watt power rating in a package size typically associated with lower-wattage (0.5W) resistors. 2. **Flameproof Coating:** The component is finished with a gray, flameproof silicone coating. In the event of an overload or circuit failure, the resistor will not catch fire or emit smoke, providing a safety mechanism for sensitive electronics. 3. **Metal Film Technology:** Unlike carbon film, metal film offers better stability against temperature fluctuations and lower noise levels, making it suitable for precision circuits. 4. **Low Ohmic Value:** The $0.1 \Omega$ resistance is often used for **current sensing** or as a **shunt** to measure voltage drops across a path. --- ### ## Component Part Number Breakdown Understanding the nomenclature helps in identifying variants: * **F:** Series Name (Flameproof Metal Film). * **1S:** Power Rating (1 Watt, Small size). * **R100:** Resistance Value ($0.1 \Omega$). * **J:** Tolerance ($\pm$ 5%). * **T:** Packaging (Tape and Reel). --- ### ## Common Applications * **Power Supplies:** Used for current limiting or feedback loops. * **Motor Controllers:** Monitoring current flow to prevent stalls or surges. * **Consumer Electronics:** Safety-critical paths where fire prevention is mandatory. * **Automotive:** Robustness against heat and vibration. ---