4N32FSM

Overview

The 4N32FSM is a single-channel optocoupler manufactured by Isocom Components 2004 LTD. It features a photodarlington output configuration driven by an infrared light-emitting diode. The device utilizes a surface-mount DIP package with six pins and lacks base leads for the output transistor. It provides an isolation voltage rating of 5300Vrms, ensuring robust electrical separation between input and output circuits in industrial applications.

Feature Summary

• Photodarlington output structure for high current transfer ratio
• Non-base lead design simplifies circuit layout
• Surface-mount DIP packaging for automated assembly

Applications

• Industrial control systems requiring galvanic isolation
• Signal transmission across isolated ground planes
• Power supply feedback loops

Procurement Notes

Verify the manufacturer designation as Isocom Components 2004 LTD against official datasheets. Confirm the 6-pin SMD package type and Darlington output configuration match system requirements. Ensure the 5300Vrms isolation rating meets safety standards for the intended application environment.

Selection Notes

Select this component when a Darlington output is required for higher gain compared to standard transistor outputs. The surface-mount form factor suits space-constrained designs. Verify compatibility with driving currents and load requirements specific to the target circuit topology.

Part Context

This part belongs to the family of single-channel optoisolators. It shares functional similarities with other Darlington-output devices but is distinguished by its specific pinout and isolation voltage rating. The non-base lead variant offers a simplified footprint compared to base-led counterparts.

Replacement Considerations

The MOC8030SD is identified as a substitute that maintains the full 5300Vrms isolation voltage specification.