The **HPC073N-R82MTR** is a high-performance, surface-mount (SMD) power inductor commonly used in DC-DC converters and high-current power supplies. It belongs to the **HPC series** of metal-alloy molded power inductors. --- ### 1. Part Number Breakdown Understanding the nomenclature helps identify the component's specific characteristics: | Component Code | Meaning | Details | | :--- | :--- | :--- | | **HPC** | Series | High Performance Inductor (Molded Type) | | **073** | Size Code | Approx. 7.0mm x 6.6mm x 3.0mm | | **N** | Construction | Standard shielding/material type | | **R82** | Inductance | **0.82 µH** (R denotes the decimal point) | | **M** | Tolerance | **±20%** | | **TR** | Packaging | Tape & Reel | --- ### 2. Technical Specifications The "R82" value indicates this is a low-inductance, high-speed part designed for high-frequency switching. * **Inductance:** 0.82 µH * **DC Resistance (DCR):** Extremely low (typically in the range of 3mΩ to 5mΩ) to minimize power loss. * **Saturation Current ($I_{sat}$):** High capacity (often > 20A), meaning it maintains inductance even under high load. * **Operating Temperature:** Typically -40°C to +125°C. * **Material:** Metal alloy powder core (offers better saturation characteristics than traditional ferrite). --- ### 3. Key Features * **Magnetic Shielding:** The molded construction provides excellent EMI (Electromagnetic Interference) shielding. * **High Current Density:** Capable of handling large current spikes without core saturation. * **Low Buzz Noise:** The solid molded structure reduces acoustic noise caused by magnetostriction. * **Compact Footprint:** The "073" size is optimized for high-density PCB layouts in portable electronics. --- ### 4. Common Applications This inductor is typically found in stages where voltage needs to be stepped down (Buck Converters) for power-hungry components: 1. **Graphic Cards (GPUs):** Powering the core VRM (Voltage Regulator Module). 2. **Laptops/Tablets:** CPU power rails where efficiency is critical. 3. **Servers:** High-efficiency POL (Point-of-Load) converters. 4. **Networking:** Routers and switches requiring stable power under varying loads.