4N30S(TA)

Overview

The 4N30S(TA) is a photodarlington output optocoupler manufactured by Everlight Electronics. It features a single channel with an isolation voltage of 5000 Vrms. The device utilizes a surface-mount 6-SMD, gull-wing package and operates within a temperature range of -55°C to 100°C. Key electrical specifications include a maximum collector-emitter voltage of 55 V and a forward current rating of 60 mA. The typical rise time is 25 µs and the fall time is 18 µs.

Feature Summary

• Integrates a GaAs infrared emitting diode with a high-gain photodarlington transistor for signal transmission.
• Provides robust electrical isolation between input and output circuits via a 5000 Vrms dielectric barrier.
• Includes a base terminal on the output transistor to facilitate faster switching speeds and improved linearity.

Applications

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

Procurement Notes

Verify the specific suffix designation against the manufacturer's latest datasheet to confirm pinout compatibility and performance characteristics. Ensure that the selected variant meets the required thermal management standards for the intended operating environment. Cross-reference ordering information with official distributor catalogs to avoid discrepancies in packaging or lead times.

Selection Notes

Select this component when high gain and moderate speed are required in a compact surface-mount form factor. The inclusion of a base pin allows for external biasing to optimize switching performance. Consider the 55 V collector-emitter voltage limit when designing load circuits to ensure adequate headroom for transient voltages.

Part Context

This part belongs to the standard 4N3x series of optocouplers, widely recognized for general-purpose isolation applications. The 'S' suffix indicates a surface-mount package variant, while '(TA)' typically denotes tape-and-reel packaging for automated assembly processes. It serves as a modern replacement for through-hole equivalents in space-constrained designs.

Replacement Considerations

Direct pin-compatible substitutes may include other 6-pin photodarlington optocouplers such as the PC817X series or HCPL-2630, provided they meet the 5000 Vrms isolation and 55 V voltage requirements. Verify CTR and switching speed parameters match the original design constraints.