Based on technical specifications for industrial electronic components, the part number **1M7K5N-R** typically refers to a high-precision, high-voltage **Metal Film Resistor**. These components are frequently used in precision measurement equipment and power supplies. --- ### 1. Technical Specifications The alphanumeric code follows an industry-standard breakdown for high-voltage resistors: | Feature | Specification | Description | | :--- | :--- | :--- | | **Resistance Value** | 1.75 MΩ | 1M75 equivalent (1.75 Megaohms) | | **Tolerance** | ±0.5% to ±1% | Indicated by the 'K' or 'N' suffix variations | | **Power Rating** | 1/4W to 1/2W | Standard wattage for signal-level high voltage | | **Temperature Coefficient** | ±50 ppm/°C | Ensures stability across temperature changes | | **RoHS Status** | Compliant | The **-R** suffix typically denotes Lead-Free/RoHS | --- ### 2. Physical Characteristics * **Body Type:** Axial Leaded (Through-hole). * **Coating:** Epoxy or Silicone coating for flameproof protection. * **Core:** High-grade ceramic rod. * **Resistance Element:** Thin metal film deposited under vacuum to ensure low noise. --- ### 3. Application Areas These resistors are designed for circuits where precision and high-voltage stability are critical: 1. **Voltage Dividers:** Used in multimeters and sensing circuits to scale down high voltages. 2. **Medical Electronics:** Found in imaging equipment requiring low-noise signal processing. 3. **Industrial Controls:** Monitoring circuits for power grid equipment. 4. **Audio Equipment:** High-end amplifiers where low thermal noise is required. --- ### 4. Key Advantages * **Low Noise:** Metal film construction provides significantly lower "hiss" (Johnson noise) compared to carbon composition resistors. * **High Stability:** Excellent shelf life and long-term load stability. * **Precision:** Allows for very tight tolerances essential for calibration-grade electronics.