DST-6-120

Overview

The DST-6-120 is a Class 2 power transformer from the DST series, designed for board mount applications. It features dual primary windings rated for 115 VAC and 230 VAC input. The secondary configuration provides a center-tapped output of 120 VCT/60 V with a total power rating of 20 VA. Current ratings are specified as 160 mA for the full secondary winding and 320 mA for each half-winding. The unit utilizes through-hole mounting and operates at frequencies of 50 Hz or 60 Hz.

Feature Summary

• Dual primary winding design supports flexible voltage selection between 115 VAC and 230 VAC inputs.
• Center-tapped secondary architecture enables split voltage outputs suitable for rectification circuits.
• Class 2 construction ensures compliance with safety isolation standards for low-energy applications.

Applications

• Industrial control panel power supplies
• General purpose AC to DC conversion stages
• Equipment requiring isolated Class 2 power sources

Procurement Notes

Verify the manufacturer designation carefully, as multiple vendors including Bel Signal Transformer and Pulse Electronics produce variants under similar part numbers. Confirm that the specific suffix matches the required 20 VA rating and dual primary specification. Ensure the datasheet confirms the 120 VCT/60 V secondary configuration before integration into designs requiring precise voltage levels.

Selection Notes

Select this component when a compact board-mount solution is required for 20 VA isolation. The dual primary capability simplifies global deployment by accommodating both 115 VAC and 230 VAC mains without hardware changes. The center-tapped secondary is ideal for full-wave rectifier topologies. Verify physical dimensions against the PCB footprint, noting the through-hole pin spacing and overall envelope constraints.

Part Context

This transformer belongs to the DST series of laminated core power transformers. These units are engineered for general-purpose industrial and commercial equipment. The series emphasizes standard electrical characteristics with robust mechanical construction. The DST-6-120 specifically addresses needs for moderate power isolation in space-constrained board-level designs.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Variants such as DST6-120B40 exist but require verification of identical electrical parameters and pinout compatibility before substitution.