The **HC7-R47-R** is a high-current, low-profile power inductor typically used in DC-DC converters and voltage regulator modules (VRMs). It is part of the **HC7 series** manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). --- ## 1. Technical Specifications Below are the primary electrical and physical characteristics of the HC7-R47-R: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.47 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | ~26.0 Amperes | | **Saturation Current (Isat)** | ~45.0 Amperes | | **DC Resistance (DCR)** | ~1.35 mΩ (Max) | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | Surface Mount (SMD) | --- ## 2. Key Features * **High Current Density:** Designed to handle significant current without saturating or overheating. * **Magnetically Shielded:** The construction minimizes Electromagnetic Interference (EMI), making it suitable for noise-sensitive environments. * **Low DCR:** The extremely low DC resistance ensures minimal power loss and high efficiency. * **RoHS Compliant:** The "R" suffix at the end of the part number denotes that the part is lead-free and meets RoHS standards. --- ## 3. Part Number Breakdown Understanding the nomenclature helps in identifying similar components: | Segment | Meaning | | :--- | :--- | | **HC7** | Product Series (High Current, Size 7) | | **R47** | Inductance value (R = Decimal point; 0.47 µH) | | **-R** | RoHS compliant / Lead-free | --- ## 4. Typical Applications The HC7-R47-R is commonly found in high-performance electronics where space is limited but power requirements are high: * **Graphics Cards (GPUs):** Providing stable power to high-wattage processors. * **Server Motherboards:** Used in multi-phase VRMs. * **Notebooks and Tablets:** Voltage regulation for CPUs. * **Industrial Power Supplies:** High-efficiency DC-DC conversion. ---