The **LP5050R-R82M** is a high-performance, shielded power inductor typically used in DC-DC converter circuits. It is part of a category of surface-mount devices (SMD) designed for high-current applications with minimal electromagnetic interference (EMI). ### 1. Part Number Breakdown Understanding the nomenclature helps identify the component's physical and electrical characteristics: | Part Segment | Meaning | Details | | :--- | :--- | :--- | | **LP** | Series Code | Low Profile / Power Inductor Series | | **5050** | Dimensions | Approximately 5.0mm x 5.0mm footprint | | **R** | Core Material | Often denotes a Ferrite or Composite core | | **R82** | Inductance Value | **0.82 µH** (R denotes decimal point) | | **M** | Tolerance | **±20%** standard tolerance | --- ### 2. Key Technical Specifications While specific values can vary slightly by manufacturer (such as *Link-PP* or *Cyntec*), the general specifications for an R82 (0.82µH) inductor in this frame size are: * **Inductance:** 0.82 µH * **DC Resistance (DCR):** Typically very low (approx. 10mΩ to 20mΩ) to minimize power loss. * **Saturation Current ($I_{sat}$):** High capacity, usually ranging from 8A to 12A depending on the specific height of the "5050" package. * **Operating Temperature:** Generally rated for -40°C to +125°C. * **Shielding:** Magnetic shielding is used to prevent the magnetic field from interfering with neighboring components. --- ### 3. Applications and Usage This specific part is ideal for "Point of Load" (POL) power supplies where high efficiency and small size are critical. * **Voltage Regulators:** Used in buck (step-down) converters for CPUs, GPUs, and FPGAs. * **Mobile Electronics:** Found in tablets and laptops due to the low-profile (height) design. * **Automotive/Industrial:** Used in sensors or infotainment systems that require stable power delivery despite electrical noise. --- ### 4. Circuit Symbol and Footprint In a schematic, it is represented by the standard inductor symbol. The physical footprint is an SMD pad layout: ```text [ Pad ] --- ( 5.0mm ) --- [ Pad ] | | (5.0mm) [ Inductor ] (5.0mm) | | [ Pad ] ------------------- [ Pad ] ``` ---