The **ASPI-0412FS-R82** is a surface-mount (SMD) power inductor manufactured by Abracon. It belongs to the ASPI-0412FS series, known for its low profile and semi-shielded construction. --- ### 1. Technical Specifications Below is a breakdown of the key electrical and physical parameters for the **-R82** variant: | Parameter | Value / Specification | | :--- | :--- | | **Inductance** | 0.82 µH | | **Tolerance** | ±30% (Standard for this value) | | **DC Resistance (DCR)** | 0.032 Ω (32 mΩ) Max | | **Saturation Current (Isat)** | 3.50 A | | **Temperature Rise Current (Irms)** | 2.50 A | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 4.0 x 4.0 x 1.2 mm | --- ### 2. Key Component Features * **Semi-Shielded Construction:** It uses a magnetic resin coating. This provides a balance between the low cost of non-shielded inductors and the low EMI (Electromagnetic Interference) of fully shielded inductors. * **Low Profile:** With a height of only 1.2mm, it is ideal for ultra-thin consumer electronics. * **High Current Density:** Designed to handle relatively high saturation currents (3.5A) despite its small footprint. * **Core Material:** Typically utilizes a Ferrite core to maintain high efficiency at switching frequencies. --- ### 3. Common Applications Due to its 0.82 µH inductance and high current rating, it is primarily used in power management stages: 1. **DC-DC Converters:** Specifically Buck (Step-down) converters in smartphones and tablets. 2. **LED Drivers:** Providing stable current for backlighting or flash modules. 3. **Portable Devices:** Used in wearables where PCB real estate and height are strictly limited. 4. **Peripheral Power:** Supplying power to HDDs, SSDs, or camera modules. --- ### 4. Part Number Breakdown Understanding the nomenclature helps in identifying similar parts in the series: * **ASPI:** Abracon Surface Power Inductor. * **0412:** Dimensions (approx. 4.0mm x 4.0mm x 1.2mm). * **FS:** Series code (Semi-shielded). * **R82:** Inductance value (R denotes decimal; 0.82 µH).