DST-5-20

Overview

The DST-5-20 is a Class 2 power transformer from the Split/Tran series, designed for through-hole printed circuit board mounting. It features dual primary windings rated for 115 VAC and 230 VAC operation at 50 Hz or 60 Hz. The secondary configuration provides split outputs of 10 VCT and 20 VCT with a total power rating of 12 VA. Secondary current ratings are specified as 680 mA for the 10V center-tapped winding and 340 mA for the 20V series winding. The unit utilizes solder pin termination and measures 48.4 mm in length, 40.4 mm in width, and 36.9 mm in height.

Feature Summary

• Dual primary winding capability supports flexible input voltage selection between 115 VAC and 230 VAC.
• Split secondary design offers versatile output configurations via center-tapped and series-connected terminals.
• Through-hole construction ensures secure mechanical attachment to printed circuit boards using solder pins.

Applications

• Electronic circuits requiring isolated Class 2 power supplies
• Equipment utilizing split secondary voltage requirements
• Industrial control systems needing 50/60 Hz laminated core transformers

Procurement Notes

Verify that the specific application requires the 12 VA power rating and the exact secondary voltage configuration of 10 VCT/20 VCT. Confirm that the physical dimensions fit the PCB layout constraints. Ensure the dual primary winding setup matches the available input voltage infrastructure. Check RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this component when a compact, board-mount solution is needed for low-power isolation tasks. The dual primary feature simplifies global deployment by accommodating different mains voltages without changing hardware. The split secondary allows for multiple voltage rails from a single magnetic component, reducing bill of materials complexity compared to separate transformers.

Part Context

This part belongs to the DST series of Split/Tran transformers manufactured by Bel Signal Transformer. These components are characterized by their laminated core construction and through-hole mounting style. The series is designed for general-purpose power transformation in electronic assemblies where space efficiency and reliable electrical isolation are required.

Replacement Considerations

Direct substitutes within the same series include the DST-5-28, which shares identical physical dimensions and primary specifications but differs in secondary voltage output. Other models in the DST family may share mounting footprints but require verification of electrical parameters before interchangeability.

FAQ

What is the maximum power rating of the DST-5-20?

The transformer has a power rating of 12 VA.

Can the primary windings be connected in parallel?

Yes, the dual primary windings support parallel connection for 115 VAC operation.