4N32FSMT&R

Overview

The 4N32FSMT&R is a surface-mount DIP optocoupler manufactured by Isocom Components 2004 LTD. It features a single channel with a phototransistor Darlington output configuration housed in a 6-pin package. Key electrical parameters include a maximum forward voltage of 1.65V, a typical rise time of 2µs, and a typical fall time of 11µs. The device supports a maximum input current of 50 mA and provides an isolation voltage of 5.3 kVrms. Current transfer ratios range from a minimum of 100% to a maximum of 800%, ensuring reliable signal transmission across isolated circuits.

Feature Summary

• Utilizes a Darlington phototransistor output structure for high current gain capability
• Provides robust galvanic isolation between input and output circuits
• Designed for surface-mount assembly within a standard DIP footprint

Applications

• Industrial control systems requiring signal isolation
• Solid-state relay driver circuits
• Microcontroller interface isolation

Procurement Notes

Verify the specific suffix 'R' indicates reel packaging when sourcing. Confirm the manufacturer designation as Isocom Components 2004 LTD to ensure component authenticity. Cross-reference the 6-pin SMD DIP package dimensions against your PCB layout requirements prior to finalizing procurement decisions.

Selection Notes

Select this component when high current transfer ratio is required due to the Darlington output stage. Ensure the 5.3 kVrms isolation rating meets the safety standards of the target application. Verify that the 50 mA maximum input current aligns with the driving circuit capabilities.

Part Context

This part belongs to the 4N32 series of optocouplers, which are widely used for general-purpose isolation. The SMT variant allows for automated assembly processes while maintaining the performance characteristics of through-hole equivalents. It serves as a bridge for digital signals in electrically noisy environments.

Replacement Considerations

Public confirmed substitute part numbers: 4N32FSM.