ST-7-16

Power Transformers Overview

The Signal Transformer ST-7-16 is a single-phase laminated power transformer designed for board mounting. It features dual primary windings rated for 115 VAC and dual secondary windings providing 8V at 4.5A in parallel or 16V at 2.25A in series. With a 36 VA power rating and operation at 50/60 Hz, it offers 2500 Vrms dielectric strength. The unit utilizes through-hole PC pin termination and complies with RoHS3 standards.

Power Transformers Feature Summary

• Utilizes split bobbin construction to enhance electrical isolation and safety performance.
• Provides flexible output configurations via dual secondary windings for parallel or series connection.
• Features laminated core design optimized for standard 50/60 Hz line frequencies.

Power Transformers Applications

• Class 2 power supply circuits requiring isolated AC voltage transformation
• Industrial control panels utilizing low-voltage AC distribution
• Equipment requiring 115V to 16VCT or 8V step-down conversion

Power Transformers Procurement Notes

Verify the specific suffix code on the component marking against the manufacturer datasheet to confirm exact voltage and current ratings. Ensure the procurement documentation explicitly states compliance with RoHS3 regulations. Confirm that the package type matches the required through-hole mounting specifications for the target PCB layout.

Power Transformers Selection Notes

Select this model when a 36 VA capacity is required for 50/60 Hz applications. Choose the ST variant over DST if only 115V primary input is needed, as the DST version supports both 115V and 230V. Ensure the physical dimensions of 66.70mm x 55.50mm fit within the enclosure constraints.

Power Transformers Part Context

This component belongs to the ST/DST series from Signal Transformer, which employs split bobbin technology. This series is engineered for high isolation requirements in general-purpose power applications. The ST designation specifically indicates a single primary voltage rating configuration compared to the dual-voltage DST variants.

Power Transformers Replacement Considerations

The DST-7-16 serves as a compatible substitute, offering identical secondary specifications but supporting an additional 230V primary input option. Verify that the replacement part maintains the same 36 VA rating and physical footprint for direct interchangeability.