The **CRA2010-FZ-R030ELF** is a high-precision, low-resistance chip resistor manufactured by **Bourns**. It is specifically designed for current sensing applications where high reliability and power handling are required. --- ### 1. Component Specifications The following table outlines the primary electrical and physical characteristics of the part: | Characteristic | Specification | | :--- | :--- | | **Manufacturer** | Bourns Inc. | | **Series** | CRA Series (High Power / Current Sense) | | **Resistance** | 0.030 Ohms (30 mΩ) | | **Tolerance** | ±1% (denoted by 'F') | | **Power Rating** | 1.0 Watt | | **Package Size** | 2010 (Imperial) / 5025 (Metric) | | **Temperature Coefficient** | ±100 ppm/°C | | **Technology** | Thick Film | | **Operating Temp Range** | -55°C to +155°C | --- ### 2. Part Number Breakdown Understanding the nomenclature helps identify the exact features of the component: * **CRA**: Series identifier (High Power Current Sense Resistor). * **2010**: Physical size (0.20" x 0.10"). * **FZ**: * **F**: ±1% Tolerance. * **Z**: High power rating version. * **R030**: Resistance value (R is the decimal point, so 0.030 Ω). * **E**: Embossed plastic tape packaging. * **LF**: Lead-Free (RoHS compliant). --- ### 3. Key Applications Because of its low resistance and 1W power rating, this part is commonly used for: 1. **Current Sensing:** Measuring current flow by monitoring the voltage drop across the resistor ($V = I \times R$). 2. **Power Supplies:** DC-DC converters and voltage regulators. 3. **Battery Management Systems (BMS):** Monitoring charge/discharge rates. 4. **Motor Control:** Detecting overcurrent conditions in drive circuits. --- ### 4. Footprint Information To use this in a PCB design, use the standard 2010 SMD footprint. ```text Dimension | Inches | Millimeters ---------------------------------- Length (L)| 0.197 | 5.00 Width (W) | 0.098 | 2.50 Height (H)| 0.024 | 0.60 ```