F-258U

Overview

The F-258U is a chassis-mount power transformer manufactured by Triad Magnetics. It features a single secondary winding configuration with a center-tapped output of 20.0V at 8.0A, resulting in a total apparent power rating of 160VA. The primary side is designed for 115V AC input. The unit provides 1500Vrms voltage isolation between windings and incorporates dielectric isolation capabilities rated up to 4kV. It utilizes wire leads for connection and is constructed with a laminated core design.

Feature Summary

• Chassis mount construction with flange mounting and wire leads
• Single secondary winding with center tap for rectifier applications
• High dielectric isolation capability up to 4kV
• Laminated core design for standard industrial power conversion

Applications

• Industrial power supply units requiring 115V primary input
• Rectifier circuits utilizing center-tapped secondary outputs
• Equipment needing 160VA power transformation with chassis integration

Procurement Notes

Verify the specific datasheet version from Triad Magnetics or authorized distributors to confirm exact lead dimensions and terminal configurations. Ensure the 115V primary rating matches the local mains voltage requirements. Confirm that the 1500Vrms isolation rating meets the safety standards applicable to the target equipment enclosure. Cross-reference the physical dimensions against the available mounting space in the final assembly.

Selection Notes

Select this component when a 160VA capacity is required for 115V systems. The center-tapped secondary is suitable for full-wave rectification topologies. Consider the physical size and weight constraints as the unit weighs approximately 6.4 lbs. Ensure the application environment supports the thermal characteristics of a laminated core transformer rather than a toroidal alternative.

Part Context

This part belongs to the Triad Magnetics power transformer series designed for direct use in power supplies. It serves as a step-down transformer for converting mains voltage to lower AC voltages for subsequent rectification and filtering stages within electronic power distribution systems.

Replacement Considerations

Check for equivalent models such as the F-256U or F-259U from the same manufacturer, noting differences in current ratings and voltage outputs. Verify that any substitute maintains the same primary voltage, mounting style, and isolation specifications.