The **LRF2010-R01JT1** is a specialized electronic component categorized as a **Current Sense Resistor** (also known as a Shunt Resistor). It is designed to measure current flow by creating a small, measurable voltage drop across its terminals. --- ## 1. Technical Specifications Below are the primary electrical and physical characteristics of the device: | Parameter | Specification | | :--- | :--- | | **Manufacturer** | TT Electronics / Welwyn | | **Resistance Value** | 0.01 Ohms (10 mΩ) | | **Tolerance** | ±5% (indicated by 'J' in the part number) | | **Power Rating** | 1 Watt | | **Case Size (Imperial)** | 2010 | | **Technology** | Thick Film | | **Temperature Coefficient** | ±100 ppm/°C | | **Operating Temperature** | -55°C to +150°C | --- ## 2. Part Number Breakdown Understanding the nomenclature helps in identifying its specific properties: 1. **LRF**: The series name (Low Resistance Flush-mount). 2. **2010**: The physical dimensions ($5.0mm \times 2.5mm$). 3. **R01**: The resistance value ($R01 = 0.01\Omega$). 4. **J**: The tolerance code ($J = 5\%$). 5. **T1**: Packaging code (usually refers to Tape & Reel quantity). --- ## 3. Key Features & Applications ### Key Features * **Low Resistance:** Essential for minimizing power loss (heat) while sensing high currents. * **High Power-to-Size Ratio:** The 2010 footprint handles 1W, which is high for its surface area. * **AEC-Q200 Qualified:** Many variants in this series are automotive grade, ensuring reliability in harsh environments. ### Common Applications * **Power Management:** DC-DC converters and voltage regulators. * **Battery Monitoring:** Tracking charge/discharge cycles in portable electronics. * **Motor Control:** Detecting overcurrent conditions in small motors. * **Automotive Systems:** Used in ECU power stages and lighting control. --- ## 4. Typical Application Circuit In a circuit, this resistor is placed in series with the load. The voltage ($V$) measured across it is proportional to the current ($I$) according to Ohm's Law: ```text V = I × R If R = 0.01Ω and V is measured at 0.01V, then I = 1 Ampere. ``` ---