The part number **47LR-162G-R** refers to a high-precision, metal film fixed resistor. These components are typically used in industrial electronics, telecommunications, and measurement devices where stability and accuracy are critical. ### Technical Specifications Below are the primary electrical and physical characteristics of this component: | Characteristic | Specification | | :--- | :--- | | **Component Type** | Metal Film Resistor | | **Resistance Value** | 1.62 kΩ (1600 + 20 Ohms) | | **Resistance Tolerance** | ±2% (indicated by the 'G' suffix) | | **Power Rating** | 0.5W (1/2 Watt) | | **Temperature Coefficient** | ±50 ppm/°C | | **Construction** | Axial Leaded | | **Operating Temp Range** | -55°C to +155°C | --- ### Part Number Breakdown Understanding the alphanumeric code helps in identifying the specific attributes: 1. **47LR**: The series identifier. "LR" generally denotes a Low-Resistance or high-precision Metal Film series (often associated with manufacturers like TE Connectivity or Neohm). 2. **162**: The resistance value code. The first two digits are significant (16), and the third digit is the multiplier ($10^2$). Thus, $16 \times 100 = 1600 \Omega$ or **1.62 kΩ**. 3. **G**: The tolerance code. In the resistor industry standard, **G = ±2%**. 4. **R**: Indicates the packaging format, typically "Reel" or "Taped and Reeled" for automated assembly. ### Key Features and Applications * **High Stability:** Metal film technology provides much better stability over time and temperature compared to standard carbon film resistors. * **Low Noise:** These resistors produce very little thermal noise, making them ideal for audio pre-amplifiers and sensitive signal processing. * **Precision Timing:** Used in RC (Resistor-Capacitor) circuits where the exact resistance value determines the timing interval or frequency. * **Current Limiting:** Used to protect delicate semiconductor components by limiting the flow of current to a specific, calculated level. --- ### Code Example: Theoretical Usage If you were using this resistor in a simple LED circuit with a 12V source to achieve a specific current ($I = V/R$): ```python # Ohms Law Calculation voltage = 12.0 # Volts resistance = 1620 # Ohms (47LR-162G-R) current = voltage / resistance print(f"The circuit current is {current:.5f} Amps or {current*1000:.2f} mA") # Output: 7.41 mA ```