SFH620A-2

Overview

The SFH620A-2 is a single-channel optoisolator manufactured by Isocom Components 2004 LTD. It features an AC input configuration utilizing inverse parallel infrared light emitting diodes paired with an NPN silicon phototransistor output. The device provides high isolation capability with a rated insulation voltage of 5300Vrms. It is housed in a standard 4-pin DIP package, suitable for through-hole mounting applications requiring reliable signal transmission across isolated circuits.

Feature Summary

• AC input design using inverse parallel infrared LEDs
• NPN silicon phototransistor output stage
• High voltage isolation rating of 5300Vrms

Applications

• Logic to logic isolators in noisy environments
• Line receiver circuits
• Computer and peripheral device interfaces

Procurement Notes

Verify the specific suffix designation when ordering, as variations such as SFH620A-3XG exist within the same series. Confirm that the required package type matches the through-hole DIP format specified for this model. Ensure compatibility with the intended circuit's voltage and current requirements before finalizing procurement decisions.

Selection Notes

Select this component for applications requiring AC input compatibility without external rectification. The inverse parallel LED structure simplifies circuit design for alternating signals. Consider the 5300Vrms isolation rating for safety-critical interfaces. Verify pinout compatibility with existing PCB layouts designed for standard 4-pin DIP optocouplers.

Part Context

This part belongs to the SFH620A series, which includes variants like SFH620A-1 and SFH620A-3G. Isocom Components specializes in industry-standard replacements and discontinued optical coupler chips. The brand has a history dating back to 1982, originally associated with Litronix and Siemens, focusing on commercial and military-grade optoelectronic devices.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.