DST-5-56

Overview

The DST-5-56 is a Class 2/3 power transformer manufactured by Signal Transformer, utilizing a laminated core design for reliable operation. It features dual primary windings rated for 115V and 230V inputs at 50/60 Hz frequencies. The secondary configuration provides dual outputs: 56VCT at 0.22A and 28V at 0.44A, delivering a maximum power of 12VA. Designed for through-hole mounting with PC pin termination, it ensures 2500Vrms isolation voltage between windings. The unit measures 47.80mm in length, 39.60mm in width, and has a maximum installation height of 36.90mm.

Feature Summary

• Dual primary winding architecture supporting both 115V and 230V AC input configurations
• Dual cavity platform construction providing enhanced electrical isolation capabilities
• Class 2/3 compliance ensuring safety standards for low-energy circuits

Applications

• Industrial control systems requiring isolated power supplies
• Consumer electronics adhering to Class 2 safety regulations
• Medical equipment needing galvanic isolation

Procurement Notes

Verify the specific datasheet version when ordering, as manufacturing changes may occur. Confirm that the dual primary winding requirement matches your system's input voltage (115V or 230V). Ensure through-hole PCB layout accommodates the specified dimensions and pin spacing. Check RoHS3 compliance status if required by regional regulations.

Selection Notes

Select this model when dual primary flexibility is needed for global deployment. The 12VA rating suits moderate power applications. Consider the physical size constraints against available PCB space. Verify thermal management requirements for continuous operation at full load. Compare with ST-5-56 if single primary winding suffices for your fixed voltage environment.

Part Context

This component belongs to the ST/DST series from Signal Transformer, which utilizes a dual cavity platform. The DST variant specifically denotes dual primary windings, distinguishing it from the ST series which typically features single primary windings. Both share similar secondary output options but differ in input flexibility.

Replacement Considerations

The ST-5-56 is a related part number within the same series. While it shares identical secondary specifications and form factor, it lacks the dual primary winding capability. Substitution requires confirming that the application only needs a single primary voltage input.