DST2-56B49

Overview

The Pulse Electronics DST2-56B49 is a dual secondary transformer designed for flyback converter applications. It features two isolated secondary windings to support multi-output power supplies. The component utilizes an epoxy encapsulation for mechanical stability and environmental protection. Primary inductance is typically specified at 1.0 mH with a tolerance of plus or minus ten percent. The device supports a maximum operating frequency of 100 kHz. Electrical isolation between primary and secondary circuits is rated at 3000 volts RMS. The unit operates within a temperature range of negative forty degrees Celsius to plus one hundred twenty-five degrees Celsius.

Feature Summary

• Dual secondary winding configuration enables independent multi-output voltage regulation
• High voltage isolation capability ensures safety compliance in power conversion circuits
• Epoxy encapsulation provides robust mechanical integrity and thermal resistance

Applications

• Multi-output AC-DC flyback power adapters
• Industrial control system power supplies
• Consumer electronics charging units requiring isolated outputs

Procurement Notes

Verify the complete part number including any suffix codes against official manufacturer documentation before ordering. Confirm that the specific variant matches the required pinout, inductance values, and isolation ratings for the target design. Cross-reference the datasheet revision date to ensure compatibility with current manufacturing standards and regulatory requirements.

Selection Notes

Select this component when a flyback topology requires two distinct isolated secondary voltages from a single magnetic core. Ensure the primary inductance value aligns with the controller's switching frequency and duty cycle constraints. Verify that the physical footprint and lead configuration fit the printed circuit board layout without interference from adjacent components.

Part Context

This transformer belongs to the DST series of dual secondary transformers manufactured by Pulse Electronics. The series is engineered for compact power supply designs where space efficiency and electrical isolation are critical. These components are commonly integrated into offline switch-mode power supplies that demand reliable performance across varying load conditions.

Replacement Considerations

Consult official substitution lists for direct equivalents. Generic replacements may differ in core material, winding gauge, or isolation testing standards. Validate any alternative part against the original specifications for inductance, turns ratio, and physical dimensions.