The **SCEP105H-R50** is a high-performance, surface-mount (SMD) power inductor. It is part of the SCEP105H series, typically manufactured by companies like **Sumida**. These components are specifically designed for high-current applications where space and efficiency are critical. --- ### 1. General Specifications The part number follows a specific nomenclature that defines its physical and electrical characteristics: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.50 µH (indicated by "R50") | | **Tolerance** | Usually ±20% | | **Case Size** | Approx. 10.4 x 10.4 x 5.6 mm | | **Mounting Type** | Surface Mount Device (SMD) | | **Core Material** | Manganese-Zinc (Mn-Zn) ferrite core | --- ### 2. Electrical Characteristics The SCEP105H series is known for its "High Current" capability. Below are the typical electrical behaviors for the R50 model: * **DCR (DC Resistance):** Extremely low (typically around 1.7 mΩ to 2.5 mΩ). This minimizes power loss through heat. * **Saturation Current ($I_{sat}$):** This is the current at which the inductance drops by a specific percentage (usually 25%). For this part, it is typically very high, often exceeding **20A - 30A**. * **Heating Current ($I_{rms}$):** The current that causes a specific temperature rise (usually 40°C). This part is designed to handle sustained high currents. --- ### 3. Key Features * **Magnetic Shielding:** The inductor is magnetically shielded, which reduces Electro-Magnetic Interference (EMI) with surrounding components. * **Low Profile:** Despite its high current rating, the "H" height profile is optimized for compact multi-layer PCB designs. * **High Frequency:** Suitable for high-frequency switching regulators (up to several MHz). --- ### 4. Common Applications Due to its high current handling and low DCR, the SCEP105H-R50 is used in: 1. **DC/DC Converters:** Voltage regulator modules (VRMs) for CPUs and GPUs. 2. **Power Supplies:** High-efficiency buck, boost, and buck-boost converters. 3. **Industrial Electronics:** High-current battery charging circuits. 4. **Telecom:** Base station power distribution units. --- ### 5. Part Number Breakdown ```text SCEP 105 H - R50 | | | | | | | +-- Inductance Value: R50 = 0.50 microhenries (µH) | | +--------- Height/Type Code (H = High current/specific height) | +------------- Dimensions (Approx. 10mm x 10mm) +------------------- Series Name (Shielded Power Inductor) ```