The part number **F2VF-4W6-R** refers to a high-performance **Carbon Film Resistor**, typically manufactured by companies like **Royal Ohm** or similar electronic component providers. These resistors are commonly used in power supplies, consumer electronics, and industrial circuits where stability and cost-effectiveness are required. ### 1. Technical Specifications The alphanumeric code provides specific details regarding the resistor's physical and electrical properties: | Parameter | Value / Description | | :--- | :--- | | **Component Type** | Fixed Resistor (Carbon Film) | | **Power Rating** | 2 Watts (Standard for F2V series) | | **Tolerance** | Generally ±5% (J) | | **Mounting Type** | Through-hole (Axial Leaded) | | **Packaging** | Tape and Reel (indicated by the suffix -R) | | **Configuration** | Single Element | --- ### 2. Breakdown of the Part Number While manufacturers vary slightly, the nomenclature generally follows this logic: * **F2V**: Indicates the series and wattage. The "2" typically denotes a **2-Watt** power handling capability. The "V" often refers to the vertical or standard axial coating style. * **4W6**: Represents the Resistance Value. * In electronic coding, the letter acts as the decimal point. * **4W6** translates to **4.6 Ohms**. * **-R**: Refers to the Packaging method. This indicates the parts are supplied on a **Reel** for automated assembly (Ammo pack or Tape & Reel). --- ### 3. Key Characteristics * **Carbon Film Technology**: These resistors are made by depositing a carbon film on a ceramic body. They offer lower noise and higher stability than basic carbon composition resistors. * **Heat Dissipation**: The 2W rating makes this a "power" resistor, meaning it is larger than standard 1/4W signal resistors and can handle significantly more current without failing. * **Flameproof Coating**: Most resistors in this series are coated with a flame-retardant material to ensure safety in the event of an electrical overload. --- ### 4. Common Applications * **Inrush Current Limiting**: Used to protect circuits from initial power surges. * **Voltage Dropping**: Reducing voltage for specific sub-circuits. * **Snubber Circuits**: Used in power electronics to suppress voltage spikes. * **Audio Equipment**: Often found in output stages of amplifiers.