### HC2LP-4R7-R Electronic Component Overview The **HC2LP-4R7-R** is a high-current, low-profile power inductor from the **HC2LP series**, manufactured by **Eaton (formerly Bussmann/Coiltronics)**. It is specifically designed for high-density power applications where space is limited and high efficiency is required. --- ### 1. Key Technical Specifications | Parameter | Value / Description | | :--- | :--- | | **Inductance** | 4.7 µH (Microhenries) | | **Tolerance** | ±20% | | **Rated Current (rms)** | ~ 17.0 Amperes | | **Saturation Current (Isat)** | ~ 15.0 Amperes | | **DC Resistance (DCR)** | ~ 4.6 mΩ (Max) | | **Operating Temperature** | -40°C to +125°C | | **Mounting Type** | Surface Mount (SMD) | | **Dimensions** | Approx. 13.5mm x 13.0mm x 6.0mm | --- ### 2. Physical and Material Characteristics * **Low Profile:** The "LP" in the part number stands for "Low Profile," making it ideal for thin electronic assemblies. * **Construction:** It features a powder iron core material which provides high saturation flux density and excellent thermal stability. * **Magnetic Shielding:** The design is typically shielded to minimize Electromagnetic Interference (EMI) with surrounding components. * **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and compliant with environmental regulations. --- ### 3. Functional Features * **High Current Handling:** Designed to manage high ripple currents without significant core loss. * **Low DCR:** The very low Direct Current Resistance minimizes power dissipation as heat, increasing the overall efficiency of the power supply. * **Soft Saturation:** The core material allows for a gradual drop in inductance as current increases, rather than a sharp drop-off, which protects the circuit during transient loads. --- ### 4. Typical Applications The HC2LP-4R7-R is commonly used in the following power management circuits: 1. **Multi-phase VRM/EVRD:** Voltage Regulator Modules for CPUs and GPUs. 2. **DC-DC Converters:** Point-of-load (POL) converters in telecommunications and networking. 3. **Solar Inverters:** Used in power conditioning units. 4. **Battery Powered Systems:** Where high efficiency is critical for battery life. --- ### 5. Part Number Breakdown ```text HC 2 LP - 4R7 - R | | | | | | | | | +-- RoHS Compliant | | | +-------- Inductance Value (4.7 µH) | | +------------- Low Profile Design | +--------------- Size/Current Rating Code +------------------ High Current Series Name ```