The **HC1-1R0-R** is a high-current, power inductor part of the **HC1 series** manufactured by Eaton (formerly Bussmann/Coiltronics). It is specifically designed for high-frequency energy storage and filtering in power electronic circuits. --- ### 1. Key Technical Specifications The part number follows a specific nomenclature. Here are the core electrical characteristics for the `HC1-1R0-R`: | Feature | Value / Description | | :--- | :--- | | **Inductance** | 1.0 µH (Microhenry) | | **Current Rating (Irms)** | ~25.0 Amps (Typical) | | **Peak Current (Isat)** | ~34.0 Amps (Saturation) | | **DC Resistance (DCR)** | ~1.7 mΩ (Milliohms) | | **Tolerance** | ±20% | | **Operating Temp** | -40°C to +125°C | | **Material** | Powdered Iron Core | --- ### 2. Physical Construction The HC1 series utilizes a robust physical design to handle high power density: * **Surface Mount (SMD):** Designed for pick-and-place assembly. * **Magnetically Shielded:** The core structure helps minimize Electromagnetic Interference (EMI) with surrounding components. * **High Power Density:** Large wire gauge is used internally to minimize resistance and heat generation during high current flow. * **Lead-Free:** The "-R" suffix indicates compliance with RoHS standards (Lead-free and environment friendly). --- ### 3. Common Applications This inductor is typically found in circuits requiring stable power delivery and high efficiency: 1. **Voltage Regulator Modules (VRM):** Used in motherboards and servers to step down voltage for CPUs. 2. **DC-DC Converters:** Found in point-of-load (POL) power supplies. 3. **Battery Powered Systems:** Ideal for portable electronics where high current is needed in a small footprint. 4. **Multi-phase Buck Regulators:** Used in parallel to provide extremely high current to high-performance GPUs or FPGAs. --- ### 4. Part Number Breakdown Understanding the code helps in selecting alternatives: * **HC1:** The series name (High Current, Size 1). * **1R0:** Represents the inductance value (1.0). The 'R' acts as a decimal point. * **-R:** RoHS compliant. ---