749196540

Overview

The Würth Elektronik 749196540 is a high-voltage SMPS transformer from the WE-FLEX series, designed for DC/DC converters. It features a flexible construction and surface mount installation. Key electrical parameters include an isolation voltage of 500Vrms, an inductance of 3.4µH at 10kHz, and a maximum current capacity of 1.91A. The component supports configurable applications with a compact footprint.

Feature Summary

• Flexible design allows for customizable winding configurations to meet specific circuit requirements.
• High voltage isolation capability ensures safety in demanding power conversion environments.
• Surface mount package facilitates automated assembly and space-constrained PCB layouts.

Applications

• Configurable DC/DC converter circuits
• High voltage switching power supplies
• Industrial power management systems

Procurement Notes

Verify the specific inductance value and current rating against the official datasheet before integration, as flexible transformers may have variant specifications. Confirm that the 500V isolation rating meets your system's safety clearance requirements. Ensure the surface mount package dimensions fit within your PCB silkscreen and copper area constraints. Check for any recent product change notices regarding material or manufacturing updates.

Selection Notes

Select this component when a customizable transformer solution is required for high-voltage isolated DC/DC applications. The flexible nature allows adaptation to unique turn ratios not found in standard off-the-shelf parts. Consider the 1.91A current limit and 3.4µH inductance at 10kHz for compatibility with your switching frequency and load profile. Evaluate thermal performance based on the expected power dissipation in your enclosure.

Part Context

This part belongs to the WE-FLEX series of flexible transformers manufactured by Würth Elektronik. These components are engineered for versatility in power electronics, offering a middle ground between rigid fixed-transformers and fully custom wound solutions. The series is characterized by its ability to be tailored for specific voltage and current needs while maintaining standard surface mount compatibility.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Due to the flexible and potentially custom-wound nature of WE-FLEX components, direct pin-to-pin replacements are unlikely. Designers should consult Wurth Elektronik directly for equivalent or updated versions if this specific part becomes obsolete.