FS28-040-C2

Power Transformers Overview

The Triad Magnetics FS28-040-C2 is a split bobbin power transformer with a 1.1VA rating, designed for Class 2 and Class 3 applications. It features dual primary windings rated for 115V and 230V operation and dual secondary windings providing 14V parallel or 28V series configurations at maximum currents of 80mA parallel or 40mA series. The unit utilizes a laminated core construction with PC pin termination for through-hole mounting. Key electrical specifications include an isolation voltage of 4200Vrms and compliance with RoHS3 standards.

Power Transformers Feature Summary

• Split bobbin design facilitates high-voltage insulation requirements
• Dual primary winding configuration supports 115V and 230V input flexibility
• Class 2/3 compliant architecture ensures safety isolation
• Laminated core construction provides efficient magnetic coupling

Power Transformers Applications

• Industrial control systems requiring Class 2 isolation
• Low-power electronic equipment power supplies
• Medical device internal power distribution
• Consumer electronics with strict safety regulations

Power Transformers Procurement Notes

Verify the specific suffix 'C2' to confirm Class 2/3 certification and 4200Vrms isolation ratings, as standard variants may differ. Confirm that the dual primary winding requirement matches the target mains voltage infrastructure. Ensure PCB layout accommodates the specified PC pin termination style and through-hole mounting dimensions. Cross-reference regulatory compliance documents for current regional safety standards before finalizing procurement orders.

Power Transformers Selection Notes

Select this component when high isolation voltage is critical for safety separation in low-power applications. The split bobbin structure is essential for meeting stringent creepage and clearance distances mandated by Class 2/3 standards. Consider the physical footprint constraints, as the laminated core assembly requires specific board space. Evaluate the thermal performance characteristics against the ambient operating conditions of the intended enclosure to ensure reliable long-term operation.

Power Transformers Part Context

This transformer belongs to the Split Pack™ series from Triad Magnetics, which specializes in compact power solutions. The FS series is engineered for general-purpose power conversion in regulated environments. As part of the broader Triad portfolio, it shares design philosophies focused on reliability and safety compliance. The specific model integrates advanced bobbin technology to achieve superior electrical isolation compared to standard wound transformers.

Power Transformers Replacement Considerations

Public confirmed substitute part numbers include 162D28 from Hammond Manufacturing. Verify that any replacement maintains identical electrical parameters, including the 1.1VA rating and 4200Vrms isolation. Ensure mechanical compatibility regarding pin spacing and overall dimensions. Confirm that the alternative component meets the same Class 2/3 safety certifications required for the original design.