### HCM1105-R72-R Electronic Component Overview The **HCM1105-R72-R** is a high-current, automotive-grade power inductor manufactured by **Eaton (formerly Cooper Bussmann)**. It belongs to the HCM series, which is designed to meet the demands of high-frequency power conversion and harsh environments. --- ### Technical Specifications | Feature | Specification | | :--- | :--- | | **Inductance** | 0.72 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | 22.0 Amperes | | **Saturation Current (Isat)** | 24.0 Amperes | | **DC Resistance (DCR)** | 2.50 mΩ (Typical) | | **Operating Temperature** | -55°C to +125°C | | **Package Size** | 11.0mm x 10.0mm x 5.0mm | | **Compliance** | AEC-Q200 Grade 1 (Automotive) | --- ### Key Construction Details 1. **Core Material:** It uses an iron powder core material which provides excellent soft saturation characteristics. This prevents a sharp drop in inductance when the current exceeds the rated levels. 2. **Magnetically Shielded:** The molded construction minimizes Electromagnetic Interference (EMI), which is critical for sensitive automotive electronics. 3. **Halogen Free & RoHS Compliant:** Meets modern environmental safety standards. --- ### Applications The HCM1105-R72-R is primarily used in power management circuits where high efficiency and reliability are required: * **Automotive Electronics:** Engine Control Units (ECUs), infotainment systems, and Advanced Driver Assistance Systems (ADAS). * **Voltage Regulator Modules (VRMs):** DC-to-DC converters for microprocessors. * **Industrial Equipment:** High-current power supplies and distributed power systems. * **Computing:** Multi-phase buck converters in servers and workstations. --- ### Part Number Breakdown ```text HCM 1105 - R72 - R | | | | | | | +-- RoHS Compliant | | +------- Inductance Value (R72 = 0.72µH) | +-------------- Size Dimensions (approx. 11x10x5 mm) +------------------- Series Name (High Current Molded) ```