Würth Electronics: SMT Power Inductor WE-MXGI Series

Product Summary

The WE-MXGI series is a molded power inductor. Its iron-based alloy material and optimized wire shape achieve low DC resistance (RDC), AC losses, and high current capability. Furthermore, its compact size and magnetic shielding structure make it optimized for high switching frequencies exceeding 1 MHz.

It is suitable for DC/DC converters and POL converters for high-current power supplies, as well as high-frequency applications using GaN and SiC.

Product features

■ Low DC resistance (RDC) and low AC loss
The use of iron-based alloy materials and optimized wire geometry achieves low DC resistance (RDC) and AC losses. This makes it suitable for power supply circuits where low power loss and high efficiency are required.

■ High current capacity
Its core-efficient design enables high current handling, making it suitable for power supply circuits such as DC/DC converters that require high current.

■ Supports high switching frequencies exceeding 1MHz
Optimized for high switching frequencies exceeding 1 MHz. Also suitable for high-frequency applications using GaN and SiC.

■ Compact size and magnetic shielding structure
It features a compact design and magnetic shielding. Two sizes are available: 4020 (4.1 x 4.1 x 2.1mm) and 5030 (5.4 x 5.4 x 3.1mm).

■ Reliable design
It employs a frameless design, eliminating the need for soldering or welding joints. It also features a self-shielding structure.

Structural features of WE-MXGI

The WE-MXGI achieves high reliability by ensuring excellent mounting flatness through its frameless design and eliminating solder and welding joints. Furthermore, it enhances high current handling capability by maximizing core utilization and achieves superior EMC characteristics through its self-shielded structure. In addition, it minimizes AC losses by reducing parasitic capacitance and reduces environmental impacts with a protective layer.

High power density

WE-MXGI employs a metal alloy nanocrystalline material with fine crystal grains smaller than 100 nm. The high magnetic permeability of this material enables high-density power packaging.

Figure 1: Nanocrystalline materials used in WE-MXGI

Product lineup

The WE-MXGI series is available in two sizes: 4020 and 5030.

4020: 4.1 x 4.1 x 2.1 mm
5030: 5.4 x 5.4 x 3.1 mm

We offer a lineup of products with different inductance, rated current, saturation current, and DC resistance for each size.
For detailed product specifications and the latest lineup, please check the manufacturer's website.
WE-MXGI Series Product List

Target application

The WE-MXGI series is suitable for a variety of applications, including power supply circuits that require high current and high switching frequencies.
• DC/DC converter for high-current power supplies
• DC/DC converter for FPGAs
POL converter
- Mainboard, graphics card
Battery-powered devices
Wireless communication equipment
Power supplies for mobile devices such as smartphones and tablets
• High-frequency applications using GaN and SiC

Component selection and simulation using REDEXPERT

REDEXPERT is an online tool that can be used for product selection and simulation, such as for inductors. In addition to searching for products that meet your requirements and comparing their characteristics, you can also check the AC and DC losses of inductors in DC/DC converters.

For more details and instructions on how to use REDEXPERT, please see the following page.

Passive component search tool "REDEXPERT"

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If you want to buy a product in a hurry, you can consider Macnica-Mouser.

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