The **MP2A-R47-R** is a high-performance, power inductor part of the **MP2A series** manufactured by Eaton (formerly Cooper Bussmann). These components are specifically designed for high-frequency DC-DC converters and power management applications. --- ## 1. Part Number Breakdown Understanding the alphanumeric code helps identify the specific technical attributes of the component: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **MP2A** | Series Name | High-current, shielded power inductor series | | **R47** | Inductance Value | **0.47 µH** (microHenries) | | **-R** | RoHS Compliant | Lead-free and compliant with environmental standards | --- ## 2. Key Technical Specifications The MP2A-R47-R is characterized by its low profile and high current-handling capability. | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.47 µH ± 20% | | **DC Resistance (DCR)** | ~1.4 mΩ (Nominal) | | **Rated Current (Irms)** | ~25.0 A to 30.0 A (depends on temp rise) | | **Saturation Current (Isat)** | ~40.0 A to 45.0 A | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | Surface Mount (SMD) | --- ## 3. Core Features and Construction * **Magnetic Shielding:** The inductor is magnetically shielded to minimize Electromagnetic Interference (EMI), making it suitable for densely packed circuit boards. * **Material:** It typically utilizes a metal powder core which provides high saturation characteristics (it doesn't "drop" inductance sharply when high current flows). * **Low DCR:** The very low Direct Current Resistance (DCR) minimizes power loss as heat, significantly increasing the efficiency of the power supply. --- ## 4. Typical Applications This component is commonly found in power regulation circuits where high efficiency and high current are required: * **Voltage Regulator Modules (VRMs):** Used for CPU and GPU power delivery in servers and PCs. * **DC-DC Converters:** Point-of-Load (POL) converters in telecommunications. * **Battery Powered Systems:** Handheld devices where heat dissipation and battery life are critical. * **Distributed Power Systems:** Industrial automation and automotive electronics. --- ## 5. Equivalent Replacement Considerations If you are looking for an alternative, ensure the following parameters match or exceed the MP2A-R47-R: 1. **Footprint:** The physical dimensions (Length x Width x Height) must match the PCB pad layout. 2. **Isat (Saturation Current):** The replacement must handle at least the same peak current without saturating. 3. **DCR:** A higher DCR will result in more heat and lower efficiency. ---