F4-28

Overview

The Triad Magnetics F4-28 is a laminated core power transformer designed for chassis mounting. It features a single primary winding rated for 115V input and a dual secondary winding configuration providing 28.0Vct at 0.200A. The unit has a 6VA power rating and utilizes quick connect terminals with lugs for termination. Physical dimensions are 60.33mm in length and 31.75mm in width.

Feature Summary

• Laminated core construction for efficient magnetic coupling
• Dual secondary winding capability for flexible circuit design
• Quick connect termination style with integrated lugs
• Chassis mount installation style for secure positioning

Applications

• Industrial control panel power supplies
• Equipment requiring isolated AC voltage steps
• General purpose electronic device power conversion

Procurement Notes

Verify the specific datasheet version to confirm terminal orientation and lug specifications. Ensure the 115V primary rating matches the local mains supply frequency and voltage. Confirm that the 6VA rating provides sufficient headroom for the intended load current without exceeding thermal limits during continuous operation.

Selection Notes

Select this component when a compact, chassis-mounted solution is required for stepping down 115V AC to a center-tapped 28V output. The 6VA rating suits low-power applications. Consider the physical footprint of 60.33mm x 31.75mm for enclosure space planning. Verify insulation requirements against the 2500Vrms isolation standard if applicable to the system safety design.

Part Context

This part belongs to the Triad Magnetics F series of power transformers. These units are characterized by their robust laminated core design and standardized pin/terminal configurations. The F4-28 specifically addresses the need for reliable step-down transformation in industrial and commercial equipment where chassis mounting is preferred over PCB integration.

Replacement Considerations

Triad Magnetics F4-24 offers similar form factor with different voltage. Triad Magnetics FD4-28 is a chassis mount variant with 6VA rating but may differ in terminal style. Cross-reference with Hammond Manufacturing equivalents for mechanical fit.