4N30S1(TA)

Overview

The 4N30S1(TA) is a single-channel photodarlington output optocoupler manufactured by Everlight Electronics Co Ltd. It features a GaAs infrared emitting diode optically coupled to a Darlington transistor array with a base terminal for enhanced sensitivity and switching speed. The device provides high isolation voltage of 5000 Vrms between the input and output circuits. It is designed for surface mount applications in a 6-SMD package, ensuring reliable signal transmission across isolated boundaries while maintaining compact board space requirements.

Feature Summary

• Integrates a GaAs infrared LED with a Darlington transistor output for high current transfer ratio
• Provides robust electrical isolation with a 5000 Vrms insulation voltage rating
• Includes a dedicated base terminal on the output transistor to improve switching performance
• Designed for surface mount technology (SMT) in a compact 6-SMD package

Applications

• Industrial control systems requiring galvanic isolation
• Solid-state relay driver circuits
• Power supply feedback loops
• Microcontroller interface isolation

Procurement Notes

Verify component authenticity through authorized Everlight distributors or certified agents. Confirm RoHS compliance status and specific tape-and-reel packaging quantities prior to ordering. Ensure storage conditions adhere to moisture sensitivity level (MSL) guidelines to prevent package damage during reflow soldering processes.

Selection Notes

Select this component when high gain and fast switching are required in an isolated environment. The integrated base terminal allows for external resistor adjustment to optimize turn-off time. Compare against standard transistor outputs if higher current drive capability is needed without external amplification.

Part Context

This part belongs to the 4Nxx series of optocouplers from Everlight, widely used in general-purpose isolation applications. It serves as a surface-mount alternative to traditional DIP-packaged isolators, offering similar electrical characteristics in a footprint suitable for automated assembly and dense PCB layouts.

Replacement Considerations

Public confirmed substitute part numbers: 4N33S(TA), 4N33S(TA)-V.