YA9033-ALD

Overview

The Coilcraft YA9033-ALD is a surface-mount flyback transformer designed for no-opto isolated DC/DC converter applications. It features a ferrite core and provides 1500 Vrms isolation between primary and secondary windings. The component supports an input voltage range of 4 V to 65 V, with a secondary output of 8 V at 0.75 A. It operates at a switching frequency of 300 kHz and delivers 6 W of power. The unit weighs approximately 2 grams and utilizes SMD/SMT termination for PCB mounting.

Feature Summary

• Enables isolated feedback control without requiring optocouplers
• Provides high-voltage isolation between circuit sections
• Optimized for compact surface-mount assembly

Applications

• Flyback converters
• DC/DC converters
• Power supplies using Texas Instruments LM5180 and LM25180 controllers

Procurement Notes

Verify the specific suffix against official Coilcraft documentation to confirm packaging and tape specifications. Confirm that the component meets all required electrical parameters for the target application before integration. Ensure compliance with RoHS standards and check for any restrictions regarding medical or high-risk usage as indicated in manufacturer guidelines.

Selection Notes

Select this component when designing isolated power stages that require elimination of optocouplers to improve reliability and reduce board space. It is suitable for applications utilizing specific Texas Instruments controller families. Ensure the design accommodates the 300 kHz operating frequency and the physical dimensions of the surface-mount package.

Part Context

This part belongs to the No-Opto Flyback Transformers series by Coilcraft. These components are engineered to replace traditional optocoupler-based feedback loops in isolated power supplies. The series offers various pin configurations and winding ratios to support different voltage conversion requirements while maintaining high efficiency and compact form factors.

Replacement Considerations

Public confirmed substitute part numbers include YA9034-ALD and YA9035-ALD from the same Coilcraft series.