SF45A H

Overview

The Astrodyne TDI SF45A H is a single-output, AC-DC switching power supply designed for industrial and commercial applications. It delivers a nominal output voltage of 48V DC with a maximum current capacity of 0.94A, resulting in a total power rating of 45W. The unit features universal input compatibility, accepting AC line voltages from 85 to 264VAC at frequencies between 47 and 440Hz. Key electrical specifications include a regulated output with low ripple and noise, ensuring stable performance for sensitive electronic loads.

Feature Summary

• Compact metal enclosure design suitable for panel mounting or DIN rail installation
• Universal AC input range supporting global voltage standards
• Integrated protection mechanisms including short-circuit and overload safeguards

Applications

• Industrial control systems requiring stable 48V DC power
• Telecommunications equipment powering remote terminal units
• Automation devices and sensor networks

Procurement Notes

Verify the specific suffix configuration against the manufacturer's datasheet to ensure correct pinout and mounting style. Confirm that the input voltage requirements match your local grid standards. Check for any regional compliance certifications required for your deployment environment. Ensure adequate ventilation space around the unit to maintain thermal performance within specified limits during operation.

Selection Notes

Select this model when a compact, reliable 48V DC source is needed for low-power industrial loads. Consider the physical dimensions and mounting options to fit the available chassis space. Evaluate the environmental conditions, such as temperature range, to ensure the operating limits are not exceeded. Compare efficiency ratings if energy consumption is a critical factor for the application.

Part Context

The SF series represents Astrodyne TDI's lineup of high-reliability AC-DC converters. These units are engineered for durability in demanding environments. The SF45A H variant specifically targets applications needing a standardized 48V output. This series is commonly used in sectors where power continuity and component longevity are prioritized over cost reduction.

Replacement Considerations

Direct replacements must match the 48V output voltage and 45W power rating. Verify footprint compatibility for existing mounting holes. Ensure the replacement unit supports the same input voltage range. Check that protection features align with system safety requirements. Consult official cross-reference lists for verified equivalent part numbers.