The **HC1-100-R** is a high-current, power inductor manufactured by Eaton (formerly Bussmann/Coiltronics). It is part of the HC1 series, specifically designed for high-frequency DC-DC converters and voltage regulator modules (VRMs). --- ### 1. Key Technical Specifications The following table highlights the core electrical characteristics of the HC1-100-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | 10.0 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | 7.4 Amps | | **Saturation Current (Isat)** | 11.2 Amps | | **DC Resistance (DCR)** | 17.5 mΩ (Max) | | **Operating Temperature** | -40°C to +125°C | | **Mounting Type** | Surface Mount (SMD) | --- ### 2. Composition and Design The "HC" in the part number stands for **High Current**. Its physical construction is optimized for modern electronics: * **Core Material:** It typically uses a powdered iron core technology which provides stable performance across high frequencies and minimizes electromagnetic interference (EMI). * **Winding:** Utilizes high-conductivity copper wire to minimize power loss (DCR) and heat generation. * **Shielding:** It is magnetically shielded, which is critical for high-density PCB layouts where components are placed close together. --- ### 3. Application Use Cases The HC1-100-R is commonly found in the following electronic circuits: 1. **Distributed Power Systems:** Used as an output filter inductor. 2. **Voltage Regulator Modules (VRM):** Essential for stepping down voltage for CPUs and GPUs. 3. **Battery Powered Systems:** High efficiency helps extend battery life. 4. **Telecommunications:** Used in base stations and networking hardware. --- ### 4. Part Number Breakdown Understanding the nomenclature helps in selecting variants: ```text HC 1 - 100 - R | | | | | | | └─ RoHS Compliant | | └────── Inductance Code (100 = 10.0 µH) | └─────────── Size/Power Rating Class └───────────── Series Name (High Current) ```