The **ASPI-7318-R82M-T** is a high-performance, surface-mount (SMD) power inductor manufactured by Abracon. It is specifically designed for high-current applications where space efficiency and low energy loss are critical. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its electrical and physical properties: | Parameter | Value / Description | | :--- | :--- | | **Inductance** | 0.82 µH | | **Tolerance** | ±20% (indicated by 'M') | | **DCR (Direct Current Resistance)** | ~4.5 mΩ (Max) | | **Isat (Saturation Current)** | ~25.0 A | | **Irms (Temperature Rise Current)** | ~14.0 A | | **Operating Temperature** | -40°C to +125°C | | **Package Size** | 7.3 x 6.8 x 3.0 mm | --- ### 2. Physical Construction The ASPI-7318 series utilizes advanced materials to achieve high efficiency: * **Core Material:** Metal alloy powder. This provides a "soft saturation" characteristic, meaning the inductance drops gradually rather than sharply when current increases. * **Shielding:** It is a **shielded** inductor. The construction minimizes Electromagnetic Interference (EMI), making it safe for use near sensitive components. * **Terminations:** Lead-free (RoHS compliant) construction with robust solder pads for high-vibration environments. --- ### 3. Key Electronic Functions The R82 (0.82 µH) variant serves several critical roles in a circuit: 1. **Energy Storage:** It stores energy in its magnetic field during the "on" cycle of a switching regulator and releases it during the "off" cycle. 2. **Ripple Filtering:** It smoothes out the current ripples in DC-DC converters to provide a steady output voltage. 3. **High Current Handling:** Due to its low DCR, it generates minimal heat even when passing high currents (up to 14A continuously). --- ### 4. Common Applications This specific inductor is typically found in: * **DC-DC Converters:** Point-of-Load (POL) power supplies. * **Computing:** High-end graphics cards (GPUs), servers, and laptops. * **Mobile Devices:** Battery-powered equipment requiring high efficiency. * **Automotive:** Infotainment systems and LED lighting drivers. --- ### 5. Part Number Breakdown ```text ASPI - 7318 - R82 M - T | | | | | | | | | └── Packaging (Tape & Reel) | | | └────── Tolerance (±20%) | | └────────── Inductance (R82 = 0.82µH) | └──────────────── Dimension (7.3 x 6.8 x 3.0 mm) └─────────────────────── Series Name ```