The **LCRS10-R47FE** is a specific electronic component, typically identifying as a **Low-Resistance Current Sense Resistor**. It is used primarily in power management circuits to monitor current flow by measuring the voltage drop across it. --- ### 1. Part Number Breakdown While manufacturer coding can vary slightly (often associated with brands like ASJ or similar chip resistor manufacturers), the alphanumeric string generally follows this logic: | Segment | Identification | Description | | :--- | :--- | :--- | | **LCRS** | Series | Low-Resistance Current Sense Chip Resistor. | | **10** | Size/Package | Often denotes the **1210** SMD package (3.2mm x 2.5mm). | | **R47** | Resistance Value | **0.47 Ohms** (470mΩ). The 'R' acts as the decimal point. | | **F** | Tolerance | **±1%** (F-class precision). | | **E** | Packaging | Typically denotes Embossed Plastic Tape or specific Lead-Free plating. | --- ### 2. Key Technical Specifications Based on standard industry specifications for this series: * **Type:** Metal Foil or Thick Film Current Sense Resistor. * **Resistance Value:** $0.47 \Omega$. * **Tolerance:** $\pm 1\%$. * **Power Rating:** Usually between **0.33W to 0.5W** (depending on the 1210 package thermal dissipation). * **Temperature Coefficient (TCR):** Generally $\pm 100$ to $\pm 200 \text{ ppm/}^\circ\text{C}$. * **Operating Temperature:** $-55^\circ\text{C}$ to $+155^\circ\text{C}$. --- ### 3. Functional Application The LCRS10-R47FE is designed for **Current Sensing**. According to Ohm's Law ($V = I \times R$), as current passes through this $0.47 \Omega$ resistor, it creates a small proportional voltage that an IC (Integrated Circuit) can read. #### Common Uses: * **DC-DC Converters:** Monitoring output current to prevent over-current conditions. * **Battery Management Systems (BMS):** Tracking charge and discharge rates in lithium batteries. * **Motor Control:** Detecting stalls or regulating torque by measuring phase current. * **Power Supplies:** Implementing feedback loops for constant current regulation. --- ### 4. Component Footprint (SMD 1210) If you are designing a PCB, the physical dimensions for the "10" (1210) size are: ```text Length: 3.20 mm (±0.20) Width: 2.50 mm (±0.20) Height: 0.55 mm (typical) ```