F28-85

Overview

The Triad Magnetics F28-85 is a board-mount power transformer featuring a split bobbin design for printed circuit board applications. It operates at a primary voltage of 115V and provides a secondary output of 28.0VCT at 0.085A, delivering a total power rating of 2.5VA. The unit supports Class 2/3 classifications and includes UL/cUL safety certifications. It utilizes a through-hole mounting configuration with six terminals.

Feature Summary

• Split bobbin construction enables nonconcentric winding for versatile PCB integration
• Class 2/3 isolation rating ensures compliance with low-energy safety standards
• Through-hole pin terminal interface facilitates direct board mounting

Applications

• Low-power electronic equipment requiring isolated AC-to-AC or AC-to-DC conversion stages
• Control circuits utilizing Class 2 power sources
• Industrial control panels with space-constrained PCB layouts

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm terminal configuration and insulation class. Ensure the procurement specification matches the required 2.5VA rating and 115V primary input. Confirm UL/cUL recognition status if regulatory compliance is mandatory for the end application.

Selection Notes

Select this component when a compact, split-bobbin transformer is required for PCB mounting. The 2.5VA rating suits low-current control applications. Verify that the 6-terminal through-hole package fits the available board real estate. Ensure the 28VCT secondary voltage aligns with downstream rectification or load requirements.

Part Context

This part belongs to the Triad Magnetics Split Pack series, designed specifically for printed circuit board assembly. The series emphasizes versatility in winding configurations to accommodate various voltage and current needs within a small footprint. These transformers are engineered for reliability in industrial and commercial electronics.

Replacement Considerations

Direct substitutes include the FS28-085-C2 variant from the same manufacturer family. Verify electrical equivalence regarding the [email protected] specification and physical pinout compatibility before substitution.