The **ASPI-7318-R15M-T** is a high-performance, surface-mount (SMD) power inductor manufactured by Abracon. It is designed primarily for DC-DC conversion applications where high efficiency and high current handling are required in a compact footprint. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.15 µH | | **Tolerance** | ±20% (indicated by 'M') | | **DC Resistance (DCR)** | ~1.4 mΩ (Max) | | **Saturation Current (Isat)** | ~40.0 A | | **Temperature Rise Current (Irms)** | ~25.0 A | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 7.3 x 6.8 x 3.0 mm (approx.) | --- ### 2. Core Features and Construction * **Shielded Construction:** The inductor is magnetically shielded, which minimizes electromagnetic interference (EMI) with surrounding components. This is critical for dense PCB layouts. * **High Saturation Current:** The "R15" (0.15 µH) value is extremely low, allowing the part to handle massive bursts of current (up to 40A) without the magnetic core "saturating" and losing its inductive properties. * **Low DCR:** By using flat wire or thick copper windings, the Direct Current Resistance is kept exceptionally low (1.4 mΩ). This reduces power loss (heat) and increases overall system efficiency. --- ### 3. Applications and Usage The ASPI-7318-R15 is typically found in the following electronic circuits: 1. **Voltage Regulator Modules (VRMs):** Used in CPU and GPU power delivery on motherboards. 2. **Point-of-Load (PoL) Converters:** Providing stable power to FPGAs or ASICs. 3. **High-Current DC-DC Converters:** Buck or Boost converters in telecommunications and industrial equipment. 4. **Battery Powered Devices:** Where high efficiency is needed to extend battery life. --- ### 4. Part Number Breakdown | Segment | Meaning | | :--- | :--- | | **ASPI** | Abracon Surface Power Inductor Series | | **7318** | Physical dimensions (Approx. 7.3 x 6.8 mm) | | **R15** | Inductance value (R15 = 0.15 µH) | | **M** | Tolerance (M = ±20%) | | **T** | Packaging (T = Tape & Reel) |