### MP2A-4R7-R: Electronic Component Analysis The **MP2A-4R7-R** is a high-performance, power inductor designed primarily for automotive and industrial power conversion applications. It belongs to the **MPIA2 (Micro Power Inductor)** series manufactured by **Eaton (formerly Cooper Bussmann)**. --- ### 1. Key Technical Specifications The part number encodes specific characteristics of the component. Below is the breakdown of its electrical and physical properties: | Parameter | Specification | | :--- | :--- | | **Inductance** | 4.7 µH (Microhenries) | | **Tolerance** | ±20% | | **Current Rating (Irms)** | ~2.5 A (Typical) | | **Saturation Current (Isat)** | ~3.8 A (Typical) | | **DC Resistance (DCR)** | ~78 mΩ (Typical) | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 2520 (2.5mm x 2.0mm) | | **Mounting Type** | Surface Mount (SMD) | --- ### 2. Core Features and Construction * **Magnetically Shielded:** The device is shielded to minimize Electromagnetic Interference (EMI), which is critical in densely packed electronic assemblies. * **Molded Construction:** It utilizes a metal powder molding process. This allows for higher current handling in a smaller footprint compared to traditional wire-wound inductors. * **AEC-Q200 Qualified:** The "A" in the series prefix often denotes automotive grade, meaning it has passed rigorous stress tests for vibration, thermal shock, and moisture. * **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and compliant with environmental regulations. --- ### 3. Applications The MP2A-4R7-R is typically found in circuits requiring efficient voltage regulation in a small form factor: 1. **DC-DC Converters:** Used as the energy storage element in buck, boost, or buck-boost converters. 2. **Infotainment Systems:** Providing stable power to automotive displays and head units. 3. **Industrial IoT:** Powering sensors and wireless modules where space is at a premium. 4. **Battery Powered Devices:** High efficiency and low DCR help extend battery life. --- ### 4. Part Number Breakdown ```text MP 2 A - 4R7 - R | | | | | | | | | +-- RoHS Compliant | | | +------- Inductance Value (4R7 = 4.7 µH) | | +------------ Automotive Grade (AEC-Q200) | +-------------- Size Code (2.5 x 2.0mm) +----------------- Series Name (Micro Power Inductor) ```