The **HCM1103-R36-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 meet the power density and efficiency requirements of modern computing and industrial electronics. ### 1. Technical Specifications The following table summarizes the key electrical and physical parameters of the device: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.36 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | 27.0 Amperes (Temperature Rise 40°C) | | **Saturation Current (Isat)** | 48.0 Amperes (20% Inductance Drop) | | **DC Resistance (DCR)** | 1.15 mΩ (Typical) / 1.35 mΩ (Max) | | **Operating Temperature** | -55°C to +125°C | | **Package Size** | 11.5mm x 10.3mm x 3.0mm | --- ### 2. Core Features * **High Current Handling:** Capable of handling massive current peaks (up to 48A) without core saturation, making it ideal for multi-phase voltage regulators. * **Low DCR:** The extremely low DC resistance (1.15 mΩ) minimizes conduction losses, leading to higher efficiency and less heat generation. * **Magnetic Shielding:** The part is magnetically shielded to reduce Electromagnetic Interference (EMI), which is critical in densely packed PCB layouts. * **Construction:** It uses a molded iron powder core construction which provides a "soft" saturation characteristic and excellent stability across temperature ranges. --- ### 3. Common Applications This inductor is typically used in high-frequency DC-DC converters and Power Management Integrated Circuits (PMICs). 1. **Voltage Regulator Modules (VRM):** Used in servers and workstations to step down voltage for CPUs and GPUs. 2. **Point-of-Load (POL) Converters:** Distributed power systems where local voltage regulation is required. 3. **Graphic Cards:** Providing stable power for high-performance video processing units. 4. **Battery Powered Systems:** Where high efficiency is needed to extend battery life. --- ### 4. Footprint and Mounting The HCM1103-R36-R is a Surface Mount Device (SMD). Below is a representation of the physical dimensions: ```text Length: 11.5 mm (max) Width: 10.3 mm (max) Height: 3.0 mm (max) ``` The low-profile height (3.0mm) allows it to be used in slim electronics such as laptops and industrial tablets. ---