SFH628A-3SM

Overview

The SFH628A-3SM is a surface-mount optoisolator manufactured by Isocom Components 2004 LTD. It features a single channel with a transistor output and an AC input type. The device provides an isolation voltage of 5300Vrms and supports a maximum forward current of 50 mA. Typical switching times are 4µs for rise and 3µs for fall. The component is housed in a 4-SMD package.

Feature Summary

• AC input configuration suitable for direct line sensing applications
• High isolation voltage rating for robust circuit protection
• Surface mount packaging for automated assembly integration

Applications

• Logic to logic isolation in noisy environments
• Line receiver circuits
• Programmable current level sensors

Procurement Notes

Verify the specific suffix against official documentation to confirm pinout and electrical tolerances. Ensure the supplier provides valid RoHS compliance certificates. Confirm that the 4-SMD package matches the target PCB footprint design requirements before finalizing orders.

Selection Notes

Select this component when AC input detection is required within a compact surface-mount form factor. The high isolation voltage makes it suitable for mains-connected interfaces. Verify that the typical switching speeds meet the system timing constraints for the intended signal processing application.

Part Context

This part belongs to the SFH628A series, which includes various pin configurations and output types. Isocom Components specializes in providing industry-standard replacements for discontinued optical isolators. The series is designed for commercial and industrial applications requiring reliable galvanic isolation.

Replacement Considerations

Direct substitutes include SFH628A-3XSMT&R and SFH628A-4SMT&R from Isocom Components. Cross-manufacturer equivalents should be verified for pin compatibility and electrical parameter alignment.