The **PI13038Q1-R82M** is a high-performance, shielded power inductor specifically designed for automotive and industrial power electronics. It is part of a family of surface-mount devices (SMD) optimized for high current density and efficiency. --- ### 1. Key Technical Specifications | Parameter | Specification | Description | | :--- | :--- | :--- | | **Inductance** | 0.82 µH | The nominal inductance value (measured at 100kHz). | | **Tolerance** | ±20% (M) | The allowable variance in inductance value. | | **DCR (Typical)** | ~2.5 mΩ | DC Resistance; lower values reduce heat dissipation. | | **I-sat (Saturation Current)** | ~25 - 30 A | The current level where inductance drops by a specific %. | | **I-rms (Rated Current)** | ~18 - 22 A | The continuous current allowed based on temperature rise. | | **Operating Temp** | -55°C to +155°C | Designed for extreme environments. | | **AEC-Q200** | Qualified | Certified for automotive reliability standards. | --- ### 2. Breakdown of the Part Number The alphanumeric code provides specific details about the component's construction: * **PI13038**: This represents the physical series and size. The "13" usually denotes a footprint of approximately 13mm x 13mm, and "038" refers to a height of 3.8mm or 4.0mm. * **Q1**: Indicates **AEC-Q200 Grade 1** qualification, making it suitable for automotive "under-the-hood" applications. * **R82**: The inductance value. "R" acts as a decimal point, meaning **0.82 microhenries (µH)**. * **M**: The tolerance code, signifying **±20%**. --- ### 3. Core Features and Construction * **Shielded Construction:** The inductor is magnetically shielded to minimize Electromagnetic Interference (EMI), which is critical in sensitive automotive sensors and infotainment systems. * **Composite Core:** Often uses a metal alloy powder core. This provides "soft saturation" characteristics, meaning the inductance doesn't drop off sharply when current increases. * **Low DCR:** The use of flat wire or heavy-gauge copper reduces DC resistance, leading to higher efficiency in DC-DC converters. --- ### 4. Common Applications This part is typically found in high-current power supply circuits, including: 1. **DC-DC Converters:** Step-down (Buck) or Step-up (Boost) regulators. 2. **ADAS Systems:** Powering cameras and radar modules in vehicles. 3. **Infotainment:** High-speed processing units requiring stable voltage rails. 4. **LED Lighting:** Constant current drivers for automotive headlights. ---