F28-200

Overview

The Triad Magnetics F28-200 is a laminated core power transformer rated at 6VA. It features a single primary winding designed for 115V input. The secondary configuration offers dual outputs: parallel connection provides 14V at 400mA, while series connection yields 28V at 200mA. This component utilizes through-hole mounting with PC pin termination. Key electrical specifications include a maximum power of 6VA and an isolation voltage of 2500Vrms. Physical dimensions are approximately 41.50mm in length, 34.83mm in width, and 34.55mm in maximum installation height.

Feature Summary

• Dual secondary winding architecture supporting flexible parallel or series output configurations
• Laminated core construction for standard power transformation applications
• Through-hole PC pin termination for reliable board mounting

Applications

• General purpose AC to DC power supply circuits
• Industrial control equipment power stages
• Consumer electronics internal power distribution

Procurement Notes

Verify the specific datasheet version corresponding to the F28-200 part number to confirm exact electrical tolerances and insulation class ratings. Ensure that the required secondary current and voltage parameters align with the parallel or series wiring options provided by the dual secondary windings. Confirm compliance with relevant safety certifications such as UL/cUL before integration into final products.

Selection Notes

Select this component when a 6VA capacity is sufficient for the load requirements. Choose between parallel (14V/400mA) or series (28V/200mA) secondary connections based on the target circuit voltage and current needs. Ensure the PCB layout accommodates the specified physical footprint and through-hole pin spacing. Verify that the operating frequency matches the system design, typically 50Hz or 60Hz.

Part Context

This transformer belongs to the F28 series from Triad Magnetics, which focuses on split bobbin designs for printed circuit board applications. The series emphasizes versatility through nonconcentrically wound structures, allowing for improved coupling and reduced leakage inductance compared to traditional concentric windings. It serves as a compact solution for board-mounted power conversion tasks.

Replacement Considerations

The ST-4-28 from Signal Transformer is listed as a direct replacement. The F28-200-C2 variant from Triad Magnetics offers similar specifications but may differ in packaging or specific certification details. Always verify pinout compatibility and mechanical dimensions before substituting.