IS4N46SM

Overview

The IS4N46SM is a surface-mount optoisolator featuring a Darlington phototransistor output with an accessible base terminal. It provides electrical isolation of 5300Vrms for a single channel. The device utilizes a 6-SMD Gull Wing package and is designed for low input current applications, offering high gain characteristics suitable for signal transmission across isolated circuits.

Feature Summary

• Darlington phototransistor output configuration
• Accessible base terminal for external control
• High voltage insulation capability
• Surface mount construction

Applications

• Low input current switching circuits
• Signal isolation in industrial control systems
• Microcontroller interface isolation

Procurement Notes

Verify the specific suffix 'SM' to confirm the 6-SMD Gull Wing package variant. Ensure the datasheet specifies the Darlington output type with base access. Confirm that the 5300Vrms isolation rating meets the safety requirements of the target application environment before finalizing procurement.

Selection Notes

Select this component when high current transfer ratio is required from a low input drive. The integrated base allows for speed adjustment or latch prevention. Compare the SMD footprint against PCB layout constraints. Verify that the operating temperature range aligns with the system's thermal profile.

Part Context

This part belongs to the Isocom Components line of optically coupled isolators. It serves as a surface-mount alternative to through-hole Darlington outputs. The series is engineered for compact designs requiring robust galvanic isolation between input control logic and higher power output stages.

Replacement Considerations

IS4N46SMT&R is a documented equivalent variant within the same manufacturer portfolio.