ZA9674-BED

Overview

The ZA9674-BED is a no-optocoupler flyback transformer designed for the Texas Instruments LM25184 controller. It supports input voltages of 4 V to 42 V and 48 V, with an output current of 0.25 A and power rating of 12 W at 300 kHz. Primary inductance is measured at 300 kHz, 0.1 Vrms, 0 Adc. Minimum primary inductance is specified at 300 kHz, 0.1 Vrms, 5 Adc. The component utilizes ferrite core material and weighs approximately 2.73–2.8 g. Packaging includes a 350/13-inch reel with 24 mm wide plastic tape.

Feature Summary

• Eliminates need for optocouplers in isolated flyback designs
• Integrated magnetic structure for compact power conversion
• Optimized for high-frequency operation at 300 kHz

Applications

• Embedded systems requiring isolated DC-DC conversion
• Industrial automation power supplies
• SMPS transformers for Texas Instruments LM25184 controllers

Procurement Notes

Verify part number suffix BED against official Coilcraft documentation to confirm specific winding configuration and packaging details. Ensure compatibility with LM25184 controller requirements before integration. Cross-reference datasheet specifications for electrical parameters to validate design margins.

Selection Notes

Select this component when designing isolated flyback converters using the LM25184 controller. Consider input voltage range of 4–42 V and 48 V, and 12 W power capability. Verify thermal performance and footprint constraints against PCB layout requirements.

Part Context

Part of the ZA967x series of no-opto flyback transformers by Coilcraft. Designed specifically for use with Texas Instruments LM25184 synchronous rectifier controllers. Offers simplified design by removing optocoupler feedback path while maintaining isolation.

Replacement Considerations

ZA9674-BE is a related variant within the same family. Verify pinout and electrical specifications before substitution. No other direct substitutes are documented in public sources.