The **CRL2512-FV-R090ELF** is a high-power, low-resistance chip resistor manufactured by Bourns. It is part of the CRL series, designed specifically for current sensing applications where precision and heat dissipation are critical. --- ### 1. Technical Specifications The following table highlights the primary electrical and physical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Resistance Value** | 0.090 Ohms (90 mΩ) | | **Power Rating** | 1 Watt | | **Tolerance** | ±1% | | **Package / Case** | 2512 (6432 Metric) | | **Temperature Coefficient (TCR)** | ±200 ppm/°C | | **Operating Temperature** | -55°C to +155°C | | **Technology** | Thick Film | --- ### 2. Part Number Breakdown Understanding the nomenclature helps in identifying variations of this part: * **CRL**: Series Name (Current Sense Chip Resistor). * **2512**: Physical size (0.25 x 0.12 inches). * **FV**: Specific terminal/performance characteristic (F = 1% Tolerance; V = specific TCR/Power rating category). * **R090**: Resistance value (R denotes decimal; 0.090Ω). * **E**: Embossed Plastic Tape packaging. * **LF**: RoHS Compliant (Lead-Free). --- ### 3. Key Applications Because of its low resistance and high power rating, this component is typically found in the following circuits: 1. **Current Sensing:** Measuring current flow by monitoring the voltage drop across the resistor ($V = I \times R$). 2. **Power Supplies:** Used in DC-DC converters for feedback loops and overcurrent protection. 3. **Battery Management:** Monitoring charging and discharging rates in portable electronics. 4. **Motor Control:** Detecting stall conditions or controlling torque in small motors. --- ### 4. Physical Considerations The **2512 package** is relatively large compared to standard signal resistors (like 0603 or 0805). This larger footprint is necessary to: * Dissipate the **1 Watt** of heat generated during operation. * Provide a larger surface area for soldering, ensuring a stable connection under thermal stress. ---