4N30SM

Overview

The onsemi 4N30SM is a general-purpose photodarlington optocoupler featuring a single channel configuration housed in an SMD-DIP-6 package. It provides high isolation with an insulation voltage of 4170 Vrms and supports a maximum collector current of 150 mA. The device operates within a temperature range of -40°C to +100°C, with a power dissipation rating of 270 mW. Key electrical parameters include a minimum current transfer ratio of 100%, a forward voltage of 1.5 V at 80 mA, and a maximum collector-emitter saturation voltage of 1 V.

Feature Summary

• Photodarlington output structure for high current gain
• SMD-DIP-6 surface mount package design
• High isolation voltage capability

Applications

• General purpose signal isolation
• Industrial control systems
• Power supply feedback loops

Procurement Notes

Verify the specific ordering suffix against the manufacturer datasheet to ensure compatibility with required packaging and tape-and-reel specifications. Confirm that the component meets RoHS compliance requirements for your assembly process. Check lead times as production cycles may vary. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when a surface-mount solution is required for applications needing high current transfer ratios and robust isolation. Consider the thermal limits and operating temperature range relative to the system environment. Evaluate the package dimensions against PCB layout constraints. Compare performance metrics against alternative optocouplers if higher speed or different output types are needed.

Part Context

This part belongs to the 4N30M series of transistor output optocouplers manufactured by onsemi. It serves as a surface-mount variant designed for replacing through-hole equivalents in compact designs. The series is widely recognized for reliability in industrial and consumer electronics applications requiring galvanic isolation between input and output circuits.

Replacement Considerations

Direct replacements must match the SMD-DIP-6 package and photodarlington output type. Verify equivalent insulation voltage and current transfer ratio specifications. Cross-reference pinouts to ensure compatibility with existing footprints.