14A-20-24B28

Overview

The Pulse Electronics 14A-20-24B28 is a board-mount power transformer with a 20VA rating and 4000Vrms isolation. It features dual primary windings rated for 115 VAC and 230 VAC, providing flexible input configuration. The unit utilizes an eight-terminal through-hole mounting style and measures 2.25 inches in length by 1.625 inches in height.

Feature Summary

• Dual primary winding design supporting multiple voltage inputs
• High isolation capability of 4000Vrms
• Through-hole construction for secure board attachment

Applications

• Industrial control systems requiring isolated power
• Medical equipment power supplies
• General-purpose AC to DC conversion stages

Procurement Notes

Verify the specific datasheet revision to confirm terminal pinout and exact physical dimensions before integration. Ensure the selected variant matches the required insulation class and safety certifications for your target market. Cross-reference the manufacturer's latest documentation to confirm availability and any potential obsolescence notices.

Selection Notes

Select this component when high isolation voltage is critical for safety compliance. The dual primary winding allows operation across standard global mains voltages without changing hardware. Verify that the 20VA power rating meets the load requirements of the downstream circuitry while maintaining appropriate thermal margins.

Part Context

This transformer belongs to Pulse Electronics' line of laminated power transformers designed for general-purpose applications. It serves as a fundamental isolation stage in power supply designs, converting AC line voltage to lower secondary levels while providing galvanic separation between primary and secondary circuits.

Replacement Considerations

Consult official substitution lists for equivalent 20VA transformers with matching 4000Vrms isolation and dual primary configurations. Ensure replacement parts maintain identical footprint dimensions and terminal arrangements to fit existing PCB layouts.