The **CRA2010-JZ-R90ELF** is a high-precision, automotive-grade thick film chip resistor manufactured by Bourns. This specific part number follows a standardized coding system that defines its physical and electrical characteristics. ### 1. Part Number Breakdown The naming convention provides detailed specifications for the component: | Code Segment | Meaning | Description | | :--- | :--- | :--- | | **CRA** | Model Series | Thick film chip resistor (Sulfur-resistant) | | **2010** | Size Code | 2010 Imperial (5025 Metric) dimensions | | **J** | Tolerance | ±5% (Standard) | | **Z** | Temperature Coefficient | ±100 ppm/°C | | **R90** | Resistance Value | 0.90 Ohms (Low resistance/current sensing) | | **E** | Termination Type | Lead-free (Matte Tin over Nickel) | | **LF** | Compliance | RoHS Compliant | --- ### 2. Technical Specifications This component is designed for durability and stability in harsh environments. * **Resistance:** 0.90 Ω (900 mΩ). * **Power Rating:** Typically 0.5 Watts to 1.0 Watt (Size 2010 standard). * **Maximum Working Voltage:** 200V. * **Operating Temperature Range:** -55°C to +155°C. * **Anti-Sulfur Design:** Specifically tested to withstand sulfurous environments, preventing "silver-sulfide" corrosion which can cause open circuits in standard resistors. --- ### 3. Key Electronic Applications Given its low resistance value (0.90Ω) and anti-sulfur properties, this part is commonly used in: 1. **Current Sensing:** Used to monitor current flow in power management circuits. 2. **Automotive Electronics:** Suitable for engine control units (ECUs) and body electronics due to AEC-Q200 compliance. 3. **Industrial Controls:** Ideal for equipment operating in polluted environments (high sulfur content from fossil fuels or industrial processes). 4. **Power Supplies:** Used in DC-DC converters for feedback loops. --- ### 4. Physical Dimensions (2010 Package) The "2010" footprint refers to the following approximate dimensions: ```markdown - Length (L): 5.00 mm (0.197 in) - Width (W): 2.50 mm (0.098 in) - Height (H): 0.60 mm (0.024 in) ```