The **SPB1007-R12M** is a high-performance, surface-mount (SMD) power inductor commonly used in DC-DC converters and power supply modules. It is designed to handle high current loads while maintaining a small physical footprint. --- ## 1. Technical Specifications The part number follows a specific nomenclature that defines its electrical characteristics: | Parameter | Value / Description | | :--- | :--- | | **Inductance** | 0.12 µH (Microhenries) | | **Tolerance** | ±20% (indicated by 'M') | | **DCR (DC Resistance)** | Very low (typically < 1.0 mΩ) | | **Saturation Current ($I_{sat}$)** | Extremely High (often 50A - 70A range) | | **Package Size** | 10mm x 7mm (approximate footprint) | | **Mounting Type** | Surface Mount (SMD/SMT) | --- ## 2. Key Internal Components The SPB1007-R12M is built using advanced materials to ensure efficiency under high-frequency switching: 1. **Magnetic Core:** Typically composed of a **Carbonyl Iron Powder** or a composite metal alloy. This material allows for "soft saturation," meaning the inductance decreases gradually rather than dropping sharply when the current increases. 2. **Windings:** Uses flat-wire or thick copper windings to minimize the **DC Resistance (DCR)**. Lower DCR translates to less heat dissipation and higher efficiency. 3. **Shielding:** The part is magnetically shielded to prevent Electromagnetic Interference (EMI) from affecting surrounding components on the PCB. --- ## 3. Applications Due to its very low inductance (0.12 µH) and high current capability, this component is ideal for: * **Voltage Regulator Modules (VRMs):** Found on high-end PC motherboards and servers. * **GPU Power Supplies:** Used to handle the rapid current spikes required by modern graphics processors. * **High-Frequency DC-DC Converters:** Suitable for switching frequencies in the MHz range. * **Point-of-Load (POL) Converters:** Providing stable power to CPUs and FPGAs. --- ## 4. Part Number Breakdown ```text SPB 1007 - R12 M | | | | Series Size Value Tolerance (Power) (10x7) (0.12µH) (±20%) ```