The **MDW2A-4R-R** is a high-performance power inductor part of the MDW series, typically manufactured by companies like **Mag.Layers**. These components are designed for high-density power applications such as DC-DC converters. ### Technical Specifications Below are the primary technical parameters for the MDW2A-4R-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | 4.7 µH | | **Tolerance** | ±20% (indicated by 'M' or standard series tolerance) | | **DC Resistance (DCR)** | ~145 mΩ (Max) | | **Saturation Current (Isat)** | ~1.30 A | | **Heat Rating Current (Irms)** | ~1.15 A | | **Package Size** | 2520 (2.5mm x 2.0mm) | | **Height** | 1.0 mm (Max) | | **Material** | Metal Alloy (Shielded) | --- ### Key Features * **Metal Alloy Construction:** Uses a molded metal powder core which provides high saturation currents and low acoustic noise compared to traditional ferrite cores. * **Magnetic Shielding:** The molded structure inherently provides magnetic shielding, reducing Electromagnetic Interference (EMI) with surrounding components. * **Low Profile:** With a 1.0mm height, it is ideal for ultra-thin electronics like smartphones and wearables. * **High Efficiency:** Optimized for low DCR to minimize power loss and heat generation during operation. --- ### Part Number Breakdown The nomenclature typically follows this logic: 1. **MDW**: Series Name (Metal Alloy Molded Power Inductor). 2. **2A**: Size Code (roughly 2.5 x 2.0 mm). 3. **4R7**: Inductance Value ($4.7$ microhenries). 4. **R**: Packing/Revision code (usually denotes Tape & Reel). --- ### Common Applications The MDW2A-4R-R is frequently found in: * **Mobile Devices:** Smartphones, tablets, and handheld gaming consoles. * **Portable Computing:** SSDs, laptops, and ultra-books. * **Power Management:** Small DC-DC converter modules and Point-of-Load (POL) regulators. ---