The **HCM1A1307V2-R47-R** is a high-current, automotive-grade power inductor manufactured by **Eaton (Bussmann Division)**. It is specifically designed for high-frequency DC-DC converters and high-stress environments. --- ## 1. Technical Specifications The part number follows a specific nomenclature that defines its physical and electrical characteristics. | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.47 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | 38.0 Amps | | **Saturation Current (Isat)** | 52.0 Amps | | **DC Resistance (DCR)** | 1.15 mΩ (typical) / 1.35 mΩ (max) | | **Operating Temperature** | -55°C to +155°C | | **Package / Case** | 1307 (approx. 13.8mm x 12.9mm x 6.5mm) | | **AEC-Q200** | Qualified (Automotive Grade) | --- ## 2. Key Construction Features * **Molded Construction:** The inductor uses a metal powder molding technology. This provides excellent shielding against electromagnetic interference (EMI) and ensures a "soft" saturation characteristic. * **High Power Density:** Due to its low DCR (Direct Current Resistance), it minimizes power loss and heat generation, allowing for very high current throughput in a relatively small footprint. * **Rugged Design:** The "V2" series represents an enhanced version designed to meet the rigorous mechanical and thermal requirements of the automotive industry. --- ## 3. Applications This component is typically found in power management circuits where high efficiency and reliability are critical: * **Automotive:** Engine Control Units (ECUs), Advanced Driver Assistance Systems (ADAS), and infotainment power supplies. * **Industrial:** High-current DC-DC converters and Distributed Power Systems (DPS). * **Computing:** Voltage Regulator Modules (VRMs) for high-performance servers and processors. --- ## 4. Understanding the Part Number `HCM1A1307V2-R47-R` | Segment | Meaning | | :--- | :--- | | **HCM1A** | Product Family (High Current Inductor, Automotive Grade) | | **1307** | Size Dimensions (Length/Width/Height) | | **V2** | Version / Generation 2 | | **R47** | Inductance Value (R47 = 0.47 µH) | | **-R** | RoHS Compliant / Lead-Free |