## ASPI-0418FS-R82: Technical Overview The **ASPI-0418FS-R82** is a shielded surface-mount (SMD) power inductor manufactured by **Abracon**. It is designed for high-efficiency power conversion in compact electronic devices. --- ### 1. Key Technical Specifications The following table outlines the fundamental electrical and physical characteristics of this component: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.82 µH | | **Tolerance** | ±30% (designated by 'N') | | **DC Resistance (DCR)** | 18 mΩ (Max) | | **Saturation Current ($I_{sat}$)** | 4.80 A | | **RMS Current ($I_{rms}$)** | 3.50 A | | **Self-Resonant Frequency (SRF)** | 110 MHz | | **Operating Temperature** | -40°C to +125°C | | **Case Size (Metric)** | 4.0 x 4.0 x 1.8 mm | --- ### 2. Part Number Breakdown The part number follows a specific nomenclature that defines its physical and electrical properties: * **ASPI**: Series name (Abracon SMD Power Inductor). * **0418**: Dimensions (Approx. 4.0mm width/length and 1.8mm height). * **FS**: Type code (Typically denotes magnetic shielding and ferrite core construction). * **R82**: Inductance value (R = decimal point; R82 = 0.82 µH). --- ### 3. Electronic Features & Construction * **Magnetic Shielding:** The "FS" series features a semi-shielded construction. This reduces Electromagnetic Interference (EMI) compared to non-shielded inductors, making it suitable for high-density PCB layouts where components are placed closely together. * **Low Profile:** With a height of only 1.8mm, it is ideal for thin consumer electronics like smartphones, tablets, and wearable tech. * **High Current Handling:** Despite its small size, the 4.8A saturation current allows it to handle significant power surges without the inductance dropping significantly. * **Ferrite Core:** Utilizes a ferrite material that provides high efficiency and low core losses at high switching frequencies. --- ### 4. Common Applications Due to its specifications, the ASPI-0418FS-R82 is primarily used in: 1. **DC-DC Converters:** Voltage regulation in battery-powered devices. 2. **Switching Power Supplies:** Used in buck, boost, or buck-boost topologies. 3. **LED Drivers:** Providing stable current to high-brightness LEDs. 4. **Peripheral Equipment:** Hard drives, SSDs, and notebook computers. ---