The **F1S-R10-FT** is a specific type of electronic component, primarily known as a **Metal Film Resistor**. Specifically, this part number often corresponds to the **F1S Series** manufactured by companies like **KOA Speer** or similar power film resistor specialists. Below is a detailed breakdown of its electronic characteristics and specifications. ### 1. Technical Specifications Table | Parameter | Specification | Description | | :--- | :--- | :--- | | **Series** | F1S | Miniature Power Metal Film Resistor | | **Resistance Value** | 10 $\Omega$ (R10) | The electrical resistance of the component | | **Tolerance** | $\pm$1% (F) | The precision/allowable deviation from 10 ohms | | **Power Rating** | 1 Watt (S-Type) | Maximum power dissipation at $70^\circ C$ | | **Termination** | T (Taping) | Packaging style (usually Ammo Pack or Tape & Reel) | | **Construction** | Metal Film | Vacuum deposited metal film on ceramic core | --- ### 2. Key Electronic Features * **Miniaturization:** The "S" in the part number usually indicates a "Small" or "Miniature" body size. It allows a 1-Watt power rating in a physical size typically reserved for 0.5-Watt resistors. * **Precision and Stability:** Because it is a metal film resistor, it offers much better stability against temperature changes compared to carbon composition resistors. * **Flame Retardant Coating:** The exterior is typically coated with a grey, non-flammable silicone or epoxy to prevent fire in the event of an overload. * **Low Inductance:** Metal film construction provides low inductance, making it suitable for high-frequency applications compared to wirewound resistors. ### 3. Application Use Cases The F1S-R10-FT is commonly used in the following scenarios: 1. **Current Sensing:** The low 10-ohm resistance is often used to monitor current flow in power supplies. 2. **Surge Protection:** Acting as a "fusible" or sacrificial component in input circuits to protect sensitive downstream semiconductors. 3. **Voltage Dividers:** Used in precision circuits where the 1% tolerance ensures accurate output. 4. **Industrial Controls:** Found in PLCs and motor controllers due to its high heat resistance. ### 4. Dimensional and Material Data ```cpp // Typical Physical Characteristics (Approximate) Body_Length: 6.3mm (+/- 0.5mm) Body_Diameter: 2.3mm (+/- 0.3mm) Lead_Diameter: 0.6mm (Tinned Copper) Coating: Flameproof Ultra-miniature coating ``` ---