The **CRA2010-GZ-R75ELF** is a high-power, thick-film chip resistor manufactured by **Bourns**. It is specifically designed for current sensing applications and high-reliability circuits. Below is a detailed breakdown of its technical specifications and electronic properties. --- ### 1. Key Technical Specifications | Parameter | Specification | |:---|:---| | **Manufacturer** | Bourns | | **Series** | CRA2010 | | **Resistance Value** | 0.75 Ohms (R75) | | **Tolerance** | ±2% (G) | | **Power Rating** | 0.5 Watt (1/2 W) | | **Package / Case** | 2010 (Metric 5025) | | **Temperature Coefficient** | ±200 ppm/°C | | **Operating Temperature** | -55°C to +155°C | | **Material** | Thick Film (Ceramic substrate) | --- ### 2. Part Number Breakdown Understanding the nomenclature helps identify the exact features of the component: * **CRA**: High-power chip resistor series. * **2010**: Standard EIA package size (0.20" x 0.10" or 5.0mm x 2.5mm). * **G**: Tolerance indicator (G = ±2%). * **Z**: High-power rating designation. * **R75**: The resistance value. "R" acts as the decimal point (0.75 $\Omega$). * **E**: Embossed plastic tape packaging. * **LF**: Lead-Free (RoHS compliant). --- ### 3. Electronic Features and Applications #### Features * **High Power Density:** The 2010 footprint allows for higher power dissipation (0.5W) compared to smaller standard resistors like 0603 or 0805. * **Stability:** Designed to maintain stability under harsh thermal conditions, common in power supply environments. * **Sensing Capabilities:** Due to its low resistance value (under 1 Ohm), it is primarily used as a **shunt resistor** to measure current flow by measuring the voltage drop across it ($V = I \times R$). #### Common Applications * **Power Supplies:** Used in DC-DC converters and AC-DC adapters for over-current protection. * **Motor Control:** Monitoring the current drawn by small motors. * **Battery Management:** Sensing charge and discharge currents in Li-ion battery packs. * **Industrial Electronics:** Feedback loops in control systems. --- ### 4. Footprint and Mounting The **2010 package** is an SMD (Surface Mount Device) component. Because this is a power resistor, it is recommended to ensure adequate copper pad area on the PCB to assist with heat dissipation. ```text Physical Dimensions (Approximate): Length: 5.00 mm (0.20 in) Width: 2.50 mm (0.10 in) Height: 0.60 mm (0.024 in) ```