The **HCM1105-R36-R** is a high-current, shielded power inductor designed by Eaton (formerly Bussmann). It is part of the HCM series, specifically engineered to meet the power density and efficiency requirements of modern computing and industrial electronics. --- ## Technical Specifications | Parameter | Specification | |:---|:---| | **Inductance** | 0.36 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 1.1 mΩ (Typical) | | **Saturation Current ($I_{sat}$)** | 40 Amps | | **RMS Current ($I_{rms}$)** | 30 Amps | | **Operating Temperature** | -55°C to +125°C | | **Package Size** | 11.5mm x 10.3mm x 5.0mm | --- ## Key Features ### 1. High Current Handling The "R36" signifies the low inductance (0.36 µH), which allows the component to handle extremely high peak currents (up to 40A) without saturating. This is critical for preventing circuit failure during high-load transients. ### 2. Low Core Loss The inductor uses an iron powder core material. This design minimizes "eddy current" losses, making it highly efficient for high-frequency switching power supplies. ### 3. Magnetic Shielding The component is magnetically shielded. This construction contains the magnetic flux within the inductor body, reducing Electromagnetic Interference (EMI) that could affect neighboring sensitive components on the PCB. --- ## Typical Applications The HCM1105-R36-R is commonly found in the following environments: * **Voltage Regulator Modules (VRMs):** Used in motherboards and servers to step down voltage for CPUs and GPUs. * **Multi-phase Regulators:** Distributed power systems where high efficiency is required. * **Desktop/Server Systems:** Powering high-performance processors. * **Point-of-Load (POL) Converters:** DC-DC converters located near the load to provide precise voltage. --- ## Comparison: HCM Series vs. Standard Inductors ```markdown Comparison Aspect | HCM1105 (High Current) | Standard Power Inductor ------------------|-----------------------|----------------------- DCR | Ultra-low (mΩ range) | Higher (higher heat) Form Factor | Compact Molded | Often Wire-wound/Open EMI | Very Low (Shielded) | Moderate to High Saturation | Soft Saturation | Hard Saturation ```