DST-4-16

Overview

The DST-4-16 is a Class 2 split bobbin power transformer from the DST series, designed for board mount applications. It features dual primary windings rated for 115 VAC and 230 VAC inputs at 50/60 Hz. The secondary configuration provides dual outputs of 8 VAC with a center tap (16 VAC CT), delivering a total power rating of 6 VA. Current ratings are specified as 800 mA per secondary winding or 400 mA in series mode. The unit utilizes through-hole mounting with PC pin termination and offers 2500 Vrms isolation. Physical dimensions are 41.3 mm in length, 33.3 mm in width, and 33.3 mm in height.

Feature Summary

• Split bobbin construction enhances inter-winding isolation and safety compliance for Class 2 circuits.
• Dual primary windings allow flexible operation across standard 115 VAC and 230 VAC input voltages.
• Dual secondary windings provide versatile output configurations including parallel or series connections.

Applications

• Low voltage AC power supply circuits
• Industrial control panel transformers
• Consumer electronics power stages

Procurement Notes

Verify that the specific order matches the manufacturer part number DST-4-16 to ensure correct electrical specifications. Confirm that the required insulation class and isolation voltage meet the target application's safety standards. Check for RoHS compliance status if environmental regulations apply. Ensure mechanical fitment aligns with the specified through-hole footprint and physical dimensions before integration.

Selection Notes

Select this component when a 6 VA rating with dual 8V secondary outputs is required. The dual primary design supports global voltage compatibility without external switching. Consider the physical size constraints relative to the 41.3 mm length and 33.3 mm height profile. Evaluate the need for split bobbin isolation if high safety margins are necessary for the end product.

Part Context

This transformer belongs to the Split/Tran™ ST/DST series by Signal Transformer/Bel. These components utilize laminated cores and split bobbin technology to achieve enhanced isolation characteristics. The series is engineered for general-purpose power transformation in compact board-mount form factors, serving as a reliable interface between mains voltage and low-voltage loads.

Replacement Considerations

Direct substitute options include the Tamura 3FD-316 and Triad Magnetics FS16-150. Verify that these alternatives match the 6 VA power rating, 115/230 VAC primary input, and 16 VCT secondary output requirements. Confirm dimensional compatibility and pinout alignment before substitution.