14A-56-28

Overview

The Signal Transformer 14A-56-28 is a board-mount power transformer featuring a laminated core and through-hole mounting style. It operates at 50/60 Hz with dual primary windings rated for 115 VAC and 230 VAC. The unit provides a secondary voltage rating of 28 V CT or 14 V, delivering a power rating of 56 VA. Secondary current capabilities are specified as 4 A in parallel configuration or 2 A in series mode. The component complies with RoHS standards and is classified as a Class 2 transformer.

Feature Summary

• Dual primary winding design supporting both 115 VAC and 230 VAC input voltages
• Flexible secondary output configuration allowing parallel or series connection modes
• Laminated core construction optimized for standard 50/60 Hz frequency operation

Applications

• General purpose AC to DC power supply circuits
• Industrial control panel power distribution
• Consumer electronics requiring isolated low-voltage AC sources

Procurement Notes

Verify the specific datasheet version to confirm insulation class and safety certifications required for your target market. Ensure the PCB footprint matches the through-hole pin spacing dimensions provided in the official mechanical drawings. Confirm that the selected operating temperature range aligns with the thermal specifications listed in the product documentation before finalizing the bill of materials.

Selection Notes

Select this model when a 56 VA power rating is necessary for applications requiring robust isolation between primary and secondary circuits. The dual primary winding allows direct compatibility with varying global line voltages without additional switching components. Consider the physical dimensions and through-hole requirements during the layout phase to ensure adequate clearance and secure mechanical attachment on the printed circuit board.

Part Context

This component belongs to the Signal Transformer power transformer lineup designed for board-mounted applications. It utilizes a laminated core structure typical for efficient magnetic flux transfer at mains frequencies. The product is engineered to meet standard safety regulations for isolated power conversion, serving as a fundamental building block for converting high-voltage AC lines to lower, usable secondary voltages.

Replacement Considerations

Publicly confirmed substitute part numbers include ST-3-56 from Signal Transformer. Verify electrical parameters such as VA rating, voltage ratings, and physical dimensions against the original specification sheet before implementing any alternative component in the design.