## Overview of HCM0703-330-R The **HCM0703-330-R** is a high-current, shielded power inductor designed by Eaton (formerly Cooper Bussmann). It belongs to the HCM series, which is specifically engineered to handle high transient current spikes and provide low electromagnetic interference (EMI). --- ### Key Specifications | Parameter | Value | | :--- | :--- | | **Inductance** | 33.0 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 148.0 mΩ (Typical) | | **Rated Current (Irms)** | 2.5 Amps | | **Saturation Current (Isat)** | 2.6 Amps | | **Operating Temperature** | -55°C to +125°C | | **Package Size** | 7.3mm x 7.0mm x 3.0mm | --- ### Technical Characteristics * **Shielded Construction:** The inductor is magnetically shielded, which minimizes EMI and prevents the magnetic field from interfering with neighboring components on the PCB. * **High Current Capability:** It is designed for high-frequency DC-DC converters and voltage regulator modules (VRMs). * **Low Core Loss:** The powdered iron core material ensures efficiency at high switching frequencies. * **SMD Mounting:** Designed for surface mount technology (SMT) with a robust 7030 footprint (roughly 7x7mm). --- ### Applications 1. **Multi-phase Regulators:** Used in CPU/GPU power supplies. 2. **DC-DC Converters:** Voltage step-down (Buck) or step-up (Boost) modules. 3. **Battery Powered Devices:** High efficiency helps extend battery life in laptops and tablets. 4. **Desktop/Server Motherboards:** Ideal for point-of-load (POL) applications. --- ### Code Identification (Breaking down the Part Number) | Component | Meaning | | :--- | :--- | | **HCM** | Product Series (High Current, Magnetically Shielded) | | **0703** | Dimensions (7.3 x 7.0 x 3.0 mm) | | **330** | Inductance Value (33 x 10^0 = 33 µH) | | **-R** | RoHS Compliant |