ST-3-16

Power Transformers Overview

The ST-3-16 is a laminated core power transformer from the Split/TRAN Class 2 series by Signal Transformer. It features a single primary winding rated for 115V operation at 50/60Hz. The secondary configuration provides dual outputs: parallel connection yields 8V at 300mA, while series connection delivers 16V at 150mA. This component utilizes through-hole PC pin termination and offers 2500Vrms isolation voltage. Its physical dimensions are 34.90mm in length, 28.60mm in width, with a maximum seated height of 31.20mm.

Power Transformers Feature Summary

• Split bobbin construction designed to minimize capacitive coupling between windings
• Class 2 safety compliance for isolated power applications
• Laminated steel core architecture for efficient magnetic flux transfer

Power Transformers Applications

• Low-power AC to DC power supply circuits
• Industrial control panel isolation stages
• Consumer electronics requiring Class 2 isolated power

Power Transformers Procurement Notes

Verify the specific datasheet revision when sourcing, as manufacturing changes may occur. Confirm that the required secondary current rating matches your circuit design, noting the trade-off between parallel (higher current) and series (higher voltage) configurations. Ensure mounting hardware compatibility, as this component typically requires separate screws and nuts for secure PCB installation.

Power Transformers Selection Notes

Select this model when a compact, low-voltage isolated transformer is needed for Class 2 compliant designs. The choice depends on whether the application prioritizes higher current at lower voltage (parallel mode) or higher voltage at lower current (series mode). Verify that the 115V primary input aligns with the available line voltage in the target region.

Power Transformers Part Context

This component belongs to the ST/DST series of Split/TRAN transformers, characterized by split bobbin technology. These units are engineered for high reliability and low noise in sensitive electronic environments. The series offers various power ratings and voltage configurations, all sharing similar mechanical footprints and mounting requirements for design flexibility.

Power Transformers Replacement Considerations

Direct replacements within the same family include models like ST-2-16 or ST-4-16, provided their power ratings and voltage specifications match the system requirements. Cross-series substitution with DST models is possible if primary voltage options differ, but mechanical fit and electrical parameters must be validated against the original design constraints.