750811291

Switching Converter, SMPS Transformers Overview

The Würth Elektronik 750811291 is an offline isolated flyback transformer designed for AC/DC converter and SMPS applications. It features a 4500Vrms isolation voltage and a primary inductance of 400µH at 100kHz. The component supports primary voltages ranging from 85V to 265V and provides a secondary auxiliary voltage of 20V at 10mA. It utilizes through-hole mounting technology and operates within a temperature range of -40°C to 125°C. The physical dimensions are 31.00mm x 31.00mm with a maximum height of 25.12mm.

Switching Converter, SMPS Transformers Feature Summary

• Provides high-voltage isolation of 4500Vrms for safety compliance
• Engineered specifically for LT3798/LT3799 chipset architectures
• Supports wide input voltage ranges suitable for offline converters

Switching Converter, SMPS Transformers Applications

• Offline AC/DC power supply converters
• Switching Mode Power Supply (SMPS) units
• Flyback converter circuits requiring high isolation

Switching Converter, SMPS Transformers Procurement Notes

Verify the specific datasheet version for the 750811291 to confirm pinout compatibility with target PCB layouts. Ensure that the LT3798 or LT3799 controller selection aligns with the transformer's electrical characteristics. Cross-reference the mechanical footprint dimensions against the assembly design files prior to procurement to guarantee correct through-hole placement.

Switching Converter, SMPS Transformers Selection Notes

Select this component when designing flyback converters utilizing Linear Technology LT3798 or LT3799 controllers. It is appropriate for applications requiring robust isolation and operation across wide input voltage ranges. Consider the thermal performance and physical size constraints when integrating this transformer into compact power supply designs.

Switching Converter, SMPS Transformers Part Context

This part belongs to the WE-OLLT series, which comprises offline flyback transformers. These components are optimized for use with specific controller chipsets to ensure efficient energy transfer and reliable operation in standard switching power supply topologies.

Switching Converter, SMPS Transformers Replacement Considerations

Direct substitutes include other WE-OLLT series transformers compatible with LT3798/LT3799. Verify inductance values and isolation ratings before substitution. Generic replacements may not match the specific magnetic properties required by the controller.