The part number **PWR05FPC1O2201** corresponds to a high-precision, high-power **MELF (Metal Electrode Leadless Face)** resistor manufactured by **Viking Tech**. These components are widely used in automotive and industrial electronics due to their reliability and stability. ### 1. General Specifications Based on the part number nomenclature, here is the breakdown of its technical characteristics: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Type** | MELF Resistor | Cylindrical surface-mount resistor | | **Power Rating** | 0.5W (1/2 Watt) | High power handling for its size | | **Resistance Value** | 2200 $\Omega$ (2.2k) | Indicated by "2201" (220 + 1 zero) | | **Tolerance** | ±1% (F) | High precision for circuit stability | | **Temperature Coeff.** | ±50 ppm/°C (C) | Low drift over temperature changes | | **Case Size** | 0204 | Standard MELF size (approx. 3.5mm x 1.4mm) | --- ### 2. Key Features * **AEC-Q200 Compliant:** This part is typically qualified for automotive use, meaning it can withstand high vibration and thermal cycling. * **Pulse Withstanding:** MELF resistors have a superior pulse-load capability compared to standard thick-film chip resistors due to their cylindrical construction and larger effective surface area. * **Excellent Stability:** They offer lower noise and better long-term stability than standard SMD resistors. * **SMD Mounting:** Designed for automated pick-and-place assembly. --- ### 3. Applications The **PWR05** series is commonly found in environments where reliability is non-negotiable: 1. **Automotive Electronics:** Engine control units (ECUs), lighting systems, and braking systems. 2. **Industrial Equipment:** Power supplies, test and measurement tools, and PLC controllers. 3. **Medical Devices:** Monitoring equipment requiring low-noise signals. 4. **Telecommunications:** Base station power management. --- ### 4. Part Number Decoding (Viking Tech) If you are sourcing or replacing this part, here is how the code is structured: | Segment | Code | Meaning | | :--- | :--- | :--- | | **Series** | PWR | Pulse Withstanding / High Power MELF | | **Size** | 05 | Power rating indicator (0.5W) | | **Tolerance** | F | ±1% | | **TCR** | C | ±50 ppm/°C | | **Packaging** | 1 | Standard Reel Packaging | | **Value** | 2201 | $220 \times 10^1 = 2200 \Omega$ | ---