The part number **47LR-141G-R** typically refers to a high-precision **Metal Film Fixed Resistor**. Below is a detailed breakdown of its specifications, construction, and typical applications. --- ### 1. Part Number Breakdown While specific manufacturers (like TE Connectivity or Vishay) may have slight variations, the nomenclature generally follows this industrial standard: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **47LR** | Series / Type | Metal Film Resistor, often associated with the LR series (Low Resistance/Precision). | | **141** | Resistance Value | The first two digits are significant figures, the third is the multiplier ($14 \times 10^1 = 140 \Omega$). | | **G** | Tolerance | Represents **±2%** (though in some series, G can represent ±0.5% or ±2% depending on the vendor). | | **-R** | Packaging/RoHS | Indicates **RoHS Compliant** or Tape & Reel packaging. | --- ### 2. Technical Specifications These parts are designed for stability and low noise. * **Resistance:** 140 Ohms. * **Power Rating:** Usually **0.25W (1/4 Watt)** or **0.5W (1/2 Watt)** depending on the physical size (e.g., LR1 or LR2 series). * **Temperature Coefficient (TCR):** Typically $\pm 50 \text{ ppm/}^{\circ}\text{C}$ to $\pm 100 \text{ ppm/}^{\circ}\text{C}$, ensuring resistance stays stable as the circuit heats up. * **Maximum Voltage:** Often rated for 200V to 350V (Working Voltage). * **Construction:** A thin film of metal alloy is deposited onto a high-grade ceramic body. Protective coatings are applied for environmental resistance. --- ### 3. Key Advantages * **Low Noise:** Metal film resistors produce significantly less thermal noise compared to carbon composition resistors, making them ideal for audio and precision sensing. * **High Precision:** They offer much tighter tolerances than standard general-purpose resistors. * **Stability:** Excellent long-term stability under load and environmental stress. --- ### 4. Common Applications 1. **Audio Processing:** Used in pre-amplifiers and signal chains where low distortion is critical. 2. **Measurement Equipment:** Multimeters and sensors that require consistent resistance values. 3. **Filtering Circuits:** Used in RC (Resistor-Capacitor) networks where the timing must remain accurate. 4. **Telecommunications:** Signal conditioning and line balancing. ---