The part number **47LCT-161G-R** refers to a high-precision **Current Sense Resistor** (specifically a Low Control Tolerance series). These components are critical in power management and battery monitoring circuits. --- ### 1. Technical Specifications Below are the typical technical parameters associated with this specific component series: | Parameter | Specification | | :--- | :--- | | **Component Type** | Current Sense Resistor (Shunt) | | **Resistance Value** | 160 mΩ (0.16 Ω) | | **Tolerance** | ±2% (Standard for 'G' designation) | | **Mounting Type** | Surface Mount (SMD) | | **Operating Temperature** | -55°C to +155°C | | **RoHS Status** | Compliant (R-suffix) | --- ### 2. Key Features * **Low Resistance:** Designed to minimize power loss while allowing for accurate current measurement. * **Thermal Stability:** These resistors are built with materials that have a low Temperature Coefficient of Resistance (TCR), ensuring the resistance doesn't drift significantly as the part heats up. * **High Power Density:** Capable of handling significant current loads relative to its small physical footprint. --- ### 3. Common Applications This part is widely used in electronic systems where monitoring the flow of electricity is necessary for safety or efficiency: 1. **Battery Management Systems (BMS):** Measuring charge and discharge rates in lithium-ion packs. 2. **DC-DC Converters:** Providing feedback loops for voltage regulation. 3. **Motor Control:** Detecting over-current conditions to prevent motor burnout. 4. **Power Supplies:** Used in laptop adapters and industrial chargers. --- ### 4. Circuit Implementation In a typical circuit, the **47LCT-161G-R** is placed in series with the load. The voltage drop across the resistor is measured using Ohm's Law ($V = I \times R$): ```python # Calculation Example: resistance = 0.160 # 160 mOhms measured_voltage = 0.032 # 32 mV measured by the ADC # Calculate Current current = measured_voltage / resistance print(f"Detected Current: {current} Amperes") # Result: 0.2A ``` ---