The **HPC042N-R82MTR** is a high-performance, surface-mount (SMD) power inductor commonly used in DC-DC converters and power management modules. Below is a detailed technical breakdown of this electronic part. --- ## 1. Part Number Breakdown While nomenclature varies slightly by manufacturer (often associated with brands like **Taiyo Yuden** or similar high-current inductor specialists), the code typically follows this logic: | Segment | Meaning | Description | | :--- | :--- | :--- | | **HPC** | Series | High Power Choke (Metal Molding Type) | | **042N** | Size | Refers to dimensions (approx. 4.0 x 4.0 x 2.0 mm) | | **R82** | Inductance | 0.82 Microhenries (µH) | | **M** | Tolerance | ±20% | | **TR** | Packaging | Tape & Reel | --- ## 2. Technical Specifications The HPC series is characterized by using **metal alloy powder cores**, which provide superior saturation current characteristics compared to traditional ferrite cores. ### Electrical Characteristics * **Inductance:** 0.82 µH * **DC Resistance (DCR):** Low (typically in the range of 10–20 mΩ) to minimize power loss. * **Saturation Current ($I_{sat}$):** High current handling, often exceeding 8A–12A (depending on the specific sub-series). * **Operating Temperature:** Generally rated for -40°C to +125°C. ### Physical Characteristics * **Core Material:** Metal Alloy (Shielded construction). * **Footprint:** Small form factor (4.0mm square) suitable for high-density PCB layouts. --- ## 3. Key Features and Advantages * **Magnetically Shielded:** The molded metal powder construction reduces Electromagnetic Interference (EMI), making it ideal for noise-sensitive circuits. * **Soft Saturation:** Unlike ferrite inductors that drop inductance sharply when overloaded, metal alloy inductors show a gradual "soft" saturation curve. * **High Efficiency:** Low DCR ensures minimal heating and high energy efficiency in power conversion. * **Robustness:** Excellent resistance to mechanical shock and vibration due to the solid molded body. --- ## 4. Typical Applications This component is frequently found in the following environments: 1. **Consumer Electronics:** Smartphones, tablets, and laptops. 2. **Power Supplies:** High-efficiency DC-DC converters (Buck, Boost, or Buck-Boost). 3. **Communication:** Base stations and networking equipment. 4. **Automotive:** Infotainment systems and ADAS modules (if AEC-Q200 qualified). ---