ST5-28B23

Power Transformers Overview

The ST5-28B23 is a board-mount power transformer manufactured by Pulse Electronics Corporation. It features a laminated core design intended for low-frequency applications. The component utilizes through-hole termination with PC pin style connections. Electrical specifications include a dual secondary winding configuration providing 28V center-tapped at 0.42A and 14V at 0.84A. Physical dimensions are approximately 47.24mm in length and 39.62mm in width, with a height of 1.44 inches. The unit has a power rating of 12VA.

Power Transformers Feature Summary

• Laminated core construction for low-frequency power transformation
• Dual secondary winding capability for flexible voltage outputs
• Through-hole PC pin termination for secure board mounting

Power Transformers Applications

• Low-frequency power supply circuits
• Industrial control systems requiring isolated power
• General purpose AC to DC conversion stages

Power Transformers Procurement Notes

Verify the specific ordering suffix against official Pulse Electronics documentation to ensure correct electrical ratings and mechanical dimensions. Confirm that the dual secondary winding configuration matches the target circuit requirements. Check for active status and availability through authorized distributors. Ensure compatibility with existing PCB footprint and thermal management strategies before finalizing procurement decisions.

Power Transformers Selection Notes

Select this component when a 12VA laminated transformer with specific 28V CT and 14V secondary outputs is required. Consider the physical size constraints of the enclosure due to the 1.44-inch height. Evaluate the through-hole mounting requirement against available assembly methods. Ensure the operating frequency aligns with the laminated core design limitations compared to high-frequency alternatives.

Power Transformers Part Context

This part belongs to the ST5 series of power transformers from Pulse Electronics. The series typically includes various configurations with different voltage and current ratings. The ST5-28B23 specifically denotes the 28V center-tapped variant within this product line. It is designed for general industrial and commercial power applications where robust isolation and standard form factors are necessary.

Power Transformers Replacement Considerations

Cross-reference with other Pulse Electronics models such as ST6-28B24 or ST7-28B56 if higher current capacity is needed. Verify mechanical compatibility with existing PCB layouts when substituting. Ensure electrical parameters match the original design requirements to maintain system performance and safety standards.