The **HC1-2R3-R** is a high-current, low-profile power inductor typically used in DC-DC converters and voltage regulator modules. It belongs to the **HC1 series** manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). --- ## 1. Technical Specifications The part number "2R3" indicates its inductance value, while the "R" denotes RoHS compliance. | Parameter | Specification | | :--- | :--- | | **Inductance** | 2.3 µH | | **Tolerance** | ±20% | | **Rated Current (Irms)** | 18.0 Amperes | | **Saturation Current (Isat)** | 23.5 Amperes | | **DC Resistance (DCR)** | 3.5 mΩ (Max) | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | Surface Mount (SMD) | --- ## 2. Key Physical Features * **Material:** It utilizes a powder iron core material which provides high saturation flux density and low core losses at high frequencies. * **Design:** It features a "flat-wire" or "ribbon" winding construction. This reduces skin effect losses and allows for a very low DCR (DC Resistance) in a compact footprint. * **Shielding:** The component is magnetically shielded, which minimizes Electromagnetic Interference (EMI) with surrounding components on the PCB. --- ## 3. Part Number Breakdown Understanding the nomenclature helps in identifying variants: | Segment | Meaning | | :--- | :--- | | **HC1** | Product Series (High Current, Size 1) | | **2R3** | Inductance Value (2.3 microhenries) | | **-R** | RoHS Compliant / Lead-Free | --- ## 4. Typical Applications The HC1-2R3-R is designed for high-density power environments where space is limited but current requirements are high: * **Computing:** Multi-phase buck regulators for CPUs and GPUs. * **Networking:** Power supplies for routers, switches, and base stations. * **Industrial:** High-efficiency point-of-load (POL) converters. * **Voltage Regulator Modules (VRMs):** Used to step down voltages for low-voltage digital ICs.