The **SPB1007-R15M** is a high-current, surface-mount (SMD) power inductor commonly used in DC-DC converters and power management modules. This part is part of the shielded power inductor category, designed for high efficiency and low electromagnetic interference (EMI). --- ### 1. Key Technical Specifications The part number follows a standard naming convention for high-frequency inductors. Here are the typical specifications: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.15 µH | | **Tolerance** | ±20% (indicated by 'M') | | **DC Resistance (DCR)** | Extremely Low (typically < 1.0 mΩ) | | **Saturation Current ($I_{sat}$)** | Very High (typically 40A - 60A+) | | **Dimensions** | Approx. 10.0 x 7.0 x 5.0 mm | | **Core Material** | Carbonyl Powder / Metal Alloy | | **Shielding** | Magnetically Shielded | --- ### 2. Component Features * **High Current Handling:** Due to the metal alloy core construction, this inductor can handle significant peaks in current without the inductance dropping sharply (soft saturation). * **Low Core Loss:** Optimized for high-frequency switching power supplies (typically up to 2MHz or higher). * **EMI Shielding:** The magnetic shielding reduces leakage flux, which prevents interference with neighboring components on the PCB. * **AEC-Q200 Compliance:** Most parts in this series are automotive grade, meaning they are tested for high vibration, thermal shock, and moisture resistance. --- ### 3. Pinout and Construction While inductors are non-polarized components, the construction of the SPB1007 series involves: 1. **Terminals:** Two large solder pads at the bottom designed for heavy current flow and heat dissipation. 2. **Internal Coil:** A flat-wire or round-wire winding depending on the specific revision, designed to minimize skin effect at high frequencies. 3. **Molding:** The coil is encapsulated in a metal powder resin under high pressure. --- ### 4. Applications The SPB1007-R15M is typically found in: * **Voltage Regulator Modules (VRM):** Specifically for CPU and GPU power phases. * **DC-DC Converters:** Buck, Boost, and Buck-Boost topologies. * **Servers and Networking:** High-current power rails for high-speed data processing. * **Automotive Electronics:** Infotainment systems and ADAS modules. ---