The **PI07030Q1-R82M** is a high-current, shielded power inductor typically used in DC-DC converter applications. It belongs to a class of surface-mount (SMD) components designed for high efficiency and high-frequency operation. --- ### 1. Technical Specifications The part number follows a specific nomenclature. Here is the breakdown of its core parameters: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.82 µH | | **Tolerance** | ±20% (indicated by 'M') | | **DC Resistance (DCR)** | Typ: 4.8 mΩ / Max: 5.3 mΩ | | **Saturation Current (Isat)** | ~22.0 A (Approximate, varies by manufacturer) | | **Heating Current (Irms)** | ~14.0 A (Approximate) | | **Operating Temperature** | -55°C to +125°C | | **Package Size** | 7.3 x 6.6 x 3.0 mm (standard 07030 footprint) | --- ### 2. Key Construction Features * **Shielded Design:** The inductor is magnetically shielded. This minimizes Electromagnetic Interference (EMI), preventing the inductor's magnetic field from affecting nearby sensitive components on the PCB. * **Composite Core:** Usually constructed from a metal alloy powder core. This material provides high saturation characteristics (it doesn't "crash" or lose inductance quickly when current increases) compared to traditional ferrite cores. * **Molded Construction:** The wire is embedded directly into the metal powder body, providing excellent structural integrity and thermal dissipation. --- ### 3. Common Applications This specific inductor is found in power management circuits where high current and small footprints are required: 1. **Voltage Regulator Modules (VRM):** Used in laptops and desktops to step down voltage for CPUs/GPUs. 2. **DC-DC Converters:** Point-of-Load (POL) converters for telecommunications and industrial equipment. 3. **Battery Powered Devices:** High-efficiency power stages for tablets or handheld electronics. 4. **LED Drivers:** Providing stable current for high-brightness LED arrays. --- ### 4. Meaning of the Part Number Code While codes vary slightly by manufacturer (such as Cyntec, Chilisin, or others using this standard nomenclature), the typical breakdown is: * **PI**: Product Series (Power Inductor). * **07030**: Physical dimensions (7mm x 7mm footprint, 3.0mm height). * **Q1**: Material or Automotive Grade designation (AEC-Q200 if specified). * **R82**: Inductance value (R = decimal point; 0.82 µH). * **M**: Tolerance (M = ±20%).