The **SCEP147H-R70** is a high-performance, surface-mount (SMD) power inductor commonly used in DC-DC converters and high-current power supplies. It is manufactured by **Sumida** (a leader in magnetic components). --- ### 1. Technical Specifications The part number "R70" indicates the inductance value, while the series code defines its physical and electrical characteristics. | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.7 µH (Microhenries) | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | ~1.60 mΩ (Typical) | | **Saturation Current (Isat)** | ~38.0 A (Approximate) | | **Temperature Rise Current (Irms)** | ~25.0 A (Approximate) | | **Operating Temperature** | -40°C to +125°C | | **Dimensions (LxWxH)** | Approx. 15.0 x 15.0 x 8.0 mm | --- ### 2. Physical Construction * **Core Material:** Magnetic shielded construction using a ferrite core. This minimizes Electromagnetic Interference (EMI) with surrounding components. * **Mounting:** Surface Mount Device (SMD/SMT) for automated PCB assembly. * **Terminals:** Flat wire or thick metal leads to handle extreme current levels without overheating. --- ### 3. Key Features * **High Current Handling:** Designed specifically for low-voltage, high-current CPU/GPU power modules and Point-of-Load (POL) converters. * **Low DCR:** The very low DC resistance minimizes power loss (heat) during operation, increasing the efficiency of the power supply. * **Magnetic Shielding:** The closed magnetic path prevents flux leakage, which is critical in dense electronic layouts to prevent noise. --- ### 4. Common Applications The SCEP147H series is typically found in: 1. **Server and Workstations:** VRM (Voltage Regulator Modules) for processors. 2. **Industrial Power Supplies:** High-efficiency DC-DC buck converters. 3. **Networking Hardware:** Routers and switches requiring stable power delivery. 4. **Automotive:** Infotainment and driver assistance systems (if AEC-Q200 qualified variants are used). --- ### 5. Part Number Breakdown (Example) `SCEP` `147` `H` `-` `R70` * **SCEP:** Series name (Shielded Power Inductor). * **147:** Case size/dimensions. * **H:** High power/High height variant. * **R70:** Inductance value (R70 = 0.70 µH).