ST-3-56

Power Transformers Overview

The ST-3-56 is a laminated core power transformer from the Split Pack series by Signal Transformer. It features a single primary winding rated for 115V and dual secondary windings providing parallel 28V and series 56V outputs at 90mA and 45mA respectively. With a maximum power rating of 2.4VA, it utilizes PC pin through-hole termination. The unit offers 2500Vrms isolation voltage and operates within standard industrial temperature ranges.

Power Transformers Feature Summary

• Split bobbin construction for enhanced electrical isolation
• Dual secondary windings supporting flexible parallel or series configurations
• Laminated core design optimized for low power applications

Power Transformers Applications

• Low power AC to DC power supply circuits
• Control transformers in industrial equipment
• General purpose isolated power distribution

Power Transformers Procurement Notes

Verify the specific datasheet version before procurement as specifications are subject to change without notice. Confirm that the required output configuration matches the available parallel or series secondary options. Ensure mounting hardware compatibility with the through-hole PC pin terminals. Check RoHS compliance status if environmental regulations apply to the final assembly.

Power Transformers Selection Notes

Select this component when a compact, low-power transformer with split bobbin isolation is required. The dual secondary allows for either 28V parallel or 56V series operation. Verify that the 2.4VA power rating meets the load requirements. Consider the physical dimensions and through-hole mounting style for PCB integration.

Power Transformers Part Context

This part belongs to the Split Pack series of power transformers designed for board mount applications. The series emphasizes compact size and reliable isolation for general-purpose use. It is manufactured by Signal Transformer, now part of Bel Fuse, focusing on magnetics solutions for various electronic industries.

Power Transformers Replacement Considerations

Triad Magnetics F56-045 is listed as a similar alternative. Verify electrical parameters such as VA rating (2.4VA vs 2.5VA) and secondary current ratings before substitution. Ensure mechanical fit and pinout compatibility match the original design requirements.