## HCM0703-150-R Component Overview The **HCM0703-150-R** is a high-current, shielded power inductor manufactured by Eaton (formerly Bussmann). It belongs to the HCM series, which is designed to meet the demands of modern high-frequency, high-current power applications. --- ### 1. Key Technical Specifications | Parameter | Value | | :--- | :--- | | **Inductance** | 15.0 µH | | **Tolerance** | ±20% | | **Rated Current (Irms)** | 3.0 A | | **Saturation Current (Isat)** | 3.2 A | | **DC Resistance (DCR)** | 93 mΩ (Max) | | **Operating Temperature** | -55°C to +125°C | | **Package Size** | 7.3mm x 6.7mm x 3.0mm | --- ### 2. Physical Construction and Features * **Shielded Construction:** The part features magnetic shielding to minimize Electromagnetic Interference (EMI), making it suitable for densely packed PCB layouts. * **Molded Powder Core:** It utilizes an iron powder core material which provides excellent saturation characteristics (soft saturation) and high efficiency at high frequencies. * **Low Profile:** With a maximum height of 3.0mm, it is ideal for thin electronic devices. * **Lead-Free/RoHS Compliant:** The "-R" suffix indicates that the part is RoHS compliant. --- ### 3. Part Number Breakdown Understanding the nomenclature helps in identifying variants: | Segment | Meaning | | :--- | :--- | | **HCM** | Series Name (High Current Inductor) | | **0703** | Dimensions (Approx. 7mm x 7mm x 3mm) | | **150** | Inductance Code (15 followed by 0 zeros = 15.0 µH) | | **-R** | RoHS Compliant | --- ### 4. Typical Applications The HCM0703-150-R is commonly found in the following circuits: 1. **DC-DC Converters:** Used as an energy storage element in buck, boost, or buck-boost regulators. 2. **Voltage Regulator Modules (VRM):** Providing stable current to CPUs and GPUs. 3. **Battery Powered Devices:** Used in laptops, tablets, and handheld medical equipment due to its high efficiency. 4. **Distributed Power Systems:** Managing power local to the load on high-end motherboards. ---