DST-5-12

Overview

The DST-5-12 is a Class 2 board-mount power transformer from the Split/Tran series by Signal Transformer. It features dual primary windings rated for 115 VAC and 230 VAC operation at 50 Hz or 60 Hz. The secondary configuration provides 12.6 V center-tapped (6.3 V per leg) with a total power rating of 12 VA. Current ratings are 2 A in parallel mode and 1 A in series mode. It utilizes a laminated core, through-hole solder pin termination, and measures 47.80 mm L x 39.60 mm W x 36.90 mm H.

Feature Summary

• Dual primary winding design supports flexible input voltage selection between 115 VAC and 230 VAC.
• Split/Tran architecture enables configurable secondary outputs for varying current and voltage requirements.
• Laminated core construction ensures efficient magnetic coupling for standard frequency operations.

Applications

• Class 2 power supply circuits requiring isolated secondary voltages
• Equipment needing 115 VAC or 230 VAC mains input conversion
• Applications utilizing split secondary configurations for rectification

Procurement Notes

Verify that the specific application requires the 12.6 V CT secondary output rather than alternative voltage variants within the DST-5 family. Confirm that the physical dimensions and through-hole pin spacing align with the target PCB layout. Ensure the system operates within the 50 Hz/60 Hz frequency range specified for this component to maintain performance integrity.

Selection Notes

Select this model when a 12 VA power rating is sufficient for the load requirements. Choose the DST-5-12 over other series members specifically for its 12.6 V center-tapped secondary configuration. Consider the through-hole mounting style if surface-mount alternatives are not suitable for the mechanical constraints of the assembly.

Part Context

This component belongs to the DST-5 series of Split/Tran transformers manufactured by Signal Transformer. These units are designed as printed circuit mount transformers offering high isolation capabilities. The series typically includes various voltage tap options while maintaining consistent form factors and electrical characteristics suitable for general-purpose power applications.

Replacement Considerations

The DST-5-12 may be substituted with the 3FD-512 manufactured by Tamura, which shares similar 12 VA specifications and pinout compatibility. Verify dimensional tolerances and insulation class requirements before implementing any cross-manufacturer replacement to ensure mechanical fit and safety compliance.