F28-420-C2

Overview

The F28-420-C2 is a Class 2/3 power transformer manufactured by Triad Magnetics, designed for board mount applications. It features a laminated core construction with dual primary and dual secondary windings. The unit supports 115V and 230V primary input voltages. Secondary output specifications include a center-tapped configuration delivering 28.0V at 0.420A. The device provides 4200Vrms isolation voltage and utilizes PC pin through-hole termination. It is certified to UL/cUL standards.

Feature Summary

• Class 2/3 safety classification for low-voltage power supply circuits
• Dual primary winding design accommodating 115V and 230V inputs
• Center-tapped secondary output providing 28.0V at 0.420A
• 4200Vrms electrical isolation between primary and secondary windings

Applications

• Industrial control systems requiring isolated power
• Consumer electronics utilizing Class 2 power sources
• Equipment needing 28V center-tapped AC supply
• Board-mounted power conversion units

Procurement Notes

Verify the specific suffix 'C2' against official Triad Magnetics documentation to confirm compliance with current Class 2/3 regulations and UL listing requirements. Ensure the procurement channel is an authorized distributor to guarantee component authenticity and adherence to RoHS directives. Cross-reference the datasheet revision date to validate that the 4200Vrms isolation rating remains consistent with the latest manufacturing standards.

Selection Notes

Select this component when a PCB-mount solution is required for Class 2/3 compliant power supplies. The dual primary winding allows flexibility for global voltage inputs without rewiring. The 28V center-tapped secondary is suitable for full-wave rectification circuits. Verify that the through-hole PC pin termination matches the target printed circuit board layout and mechanical constraints.

Part Context

This model belongs to the Triad Magnetics power transformer lineup, specifically engineered for board-mounted installations. It serves as an isolated power source for low-power electronic applications. The series distinguishes itself through standardized Class 2/3 ratings and robust lamination techniques. It replaces older designs by offering integrated safety certifications directly on the component level.

Replacement Considerations

Consult Triad Magnetics official substitution guides for direct equivalents. Potential alternatives may include models from the FS or VPP series if mounting style or voltage ratings differ. Verify that any substitute maintains the 4200Vrms isolation and 28Vct output specification.