F28-700-C2

Overview

The Triad Magnetics F28-700-C2 is a laminated core power transformer designed for through-hole mounting. It features dual primary windings supporting 115V and 230V input configurations in parallel. The secondary side offers dual windings with parallel operation at 14V delivering 1.4A, or series operation at 28V providing 700mA. This component has a maximum power rating of 20VA and provides 4200Vrms isolation voltage. Physical dimensions are 57.15mm length by 47.63mm width, with a maximum installed height of unspecified value in source data but weight listed as 0.8lb (362.87g).

Feature Summary

• Dual primary winding configuration supports flexible 115V or 230V AC input selection.
• Dual secondary windings allow selectable parallel (14V/1.4A) or series (28V/700mA) output modes.
• High isolation capability rated at 4200Vrms for enhanced safety compliance.
• Laminated core construction ensures efficient magnetic coupling for power applications.

Applications

• Class 2 and Class 3 power supply circuits requiring isolated DC outputs.
• Equipment needing 14V or 28V secondary voltages with corresponding current ratings.
• Industrial control systems utilizing standard laminated transformer form factors.

Procurement Notes

Verify the specific datasheet version when ordering, as manufacturer documentation may update physical dimensions or regulatory certifications over time. Confirm that the 6-pin PC pin termination matches the target PCB layout. Ensure the selected input voltage configuration aligns with the available primary winding connections on the board. Check for any regional compliance requirements such as RoHS status if applicable to the final assembly environment.

Selection Notes

Choose this model when a 20VA capacity is required with either 14V high-current or 28V lower-current secondary options. The dual primary design simplifies global voltage compatibility without changing hardware. Consider the physical footprint of 57.15mm x 47.63mm for enclosure space planning. The through-hole mounting style provides mechanical stability compared to surface mount alternatives.

Part Context

This component belongs to the Split Pack™ series from Triad Magnetics, specifically within the Class 2/3 category. These transformers are engineered for general-purpose power conversion where electrical isolation is critical. The FS and F series share similar architectural principles but differ in power ratings and physical sizes to suit various application densities.

Replacement Considerations

Direct substitutes include other Triad Magnetics models within the same Split Pack™ family that match the 20VA rating and 4200Vrms isolation. Verify that alternative part numbers maintain the same 6-pin through-hole pinout and dimensional constraints to ensure mechanical compatibility without redesigning the host circuit board.

FAQ

Can the secondary windings be used independently?

No, the datasheet specifies parallel or series connection for the dual secondary windings to achieve the rated 14V/1.4A or 28V/700mA outputs respectively.

What is the maximum operating temperature?

The provided source material does not specify the maximum operating temperature or thermal class rating for this component.