14A-20-512

Overview

The Signal Transformer 14A-20-512 is a laminated core power transformer designed for through-hole mounting. It features a single primary winding rated for 115V and 230V operation at 50/60 Hz. The secondary configuration provides dual outputs: a 5VDC winding capable of 750mA and a split ±12VDC winding with 200mA per rail. This component offers a maximum power rating of 20VA and includes a dielectric strength of 4000Vrms to ensure electrical isolation between windings.

Feature Summary

• Dual secondary voltage outputs providing both 5V and ±12V rails
• Laminated core construction for efficient magnetic coupling
• Through-hole pin termination for secure board integration
• High dielectric isolation strength for safety compliance

Applications

• Power supply units requiring multiple voltage rails
• Industrial control systems with mixed logic and analog needs
• Consumer electronics utilizing standard AC input voltages
• Embedded systems requiring isolated DC power conversion

Procurement Notes

Verify the specific voltage configuration and current ratings against your circuit design requirements before procurement. Confirm that the through-hole footprint matches your PCB layout constraints. Ensure compatibility with the intended operating frequency range of 50Hz or 60Hz. Check for any regional regulatory compliance certifications required for your target market, such as RoHS status.

Selection Notes

Select this model when a single transformer can provide three distinct voltage levels from one AC source. Consider the 20VA power limit to ensure it meets the total load demand of all secondary circuits. Evaluate the physical dimensions to ensure adequate clearance on the assembly board. Compare insulation requirements against other models if higher voltage isolation is necessary for your specific application environment.

Part Context

This component belongs to the Signal Transformer power transformer lineup, specifically designed for general-purpose AC-to-DC conversion stages. It utilizes a laminated steel core structure typical for low-frequency applications. The part is manufactured by Signal Transformer, now part of Bel Fuse, focusing on reliable electromagnetic components for industrial and commercial electronic equipment.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and thermal characteristics if considering alternative manufacturers. Ensure that any replacement maintains the same 4000Vrms isolation rating and 20VA power capacity to avoid performance degradation.