The **NCSS25-R002TRF** is a specialized electronic component categorized as a **Current Sense Resistor** (Shunt Resistor). It is designed to measure current flow by monitoring the voltage drop across its terminals. --- ## 1. Technical Specifications The following table summarizes the key electrical and physical characteristics of this part: | Feature | Specification | | :--- | :--- | | **Manufacturer** | NIC Components | | **Resistance Value** | 0.002 Ohms (2mΩ) | | **Tolerance** | ±1% (F) | | **Power Rating** | 2 Watts | | **Package Size** | 2512 (Inch) / 6432 (Metric) | | **Temperature Coefficient** | ±100ppm/°C (typically) | | **Technology** | Metal Foil / Metal Strip | | **Operating Temperature** | -55°C to +155°C | --- ## 2. Key Features and Construction The NCSS series is engineered for high-precision power management tasks: * **Low Resistance Value:** At 2mΩ, it minimizes power loss ($P = I^2 \times R$) while allowing for accurate current measurement. * **Metal Strip Element:** Unlike standard thick-film resistors, this uses a solid metal alloy. This provides superior heat dissipation and stability under high current loads. * **AEC-Q200 Qualified:** Most parts in this series meet automotive grade standards, ensuring high reliability in harsh environments. * **Surface Mount (SMD):** The 2512 form factor is large enough to handle 2W of power while remaining compatible with automated pick-and-place assembly. --- ## 3. Typical Applications This component is commonly found in circuits requiring "Current Sensing" or "Overcurrent Protection": 1. **Battery Management Systems (BMS):** Monitoring the charge and discharge rates of Li-ion battery packs. 2. **DC-DC Converters:** Providing feedback to the controller to regulate output current. 3. **Motor Controllers:** Sensing the phase current to manage torque and speed. 4. **Power Supplies:** Implementing short-circuit protection. --- ## 4. Part Number Breakdown The part number can be decoded as follows: * **NCSS:** Series Name (Metal Foil Current Sense) * **25:** Size (2512) * **R002:** Resistance Value (0.002Ω) * **T:** Packaging (Tape & Reel) * **RF:** RoHS Compliant / Lead-Free ---