SFH609-3G

Overview

The SFH609-3G is a single-channel optocoupler featuring an infrared LED and NPN silicon phototransistor with base terminal. It provides high isolation voltage of 7500Vpk. The device utilizes a 6-pin DIP package for through-hole mounting. Key electrical parameters include a maximum forward voltage of 1.65V, typical rise time of 2µs, and typical fall time of 11µs. Current transfer ratio ranges from 200% to 400%, with a maximum input current of 60 mA.

Feature Summary

• Integrated NPN phototransistor with accessible base terminal for enhanced control
• High-voltage insulation capability suitable for demanding isolation environments
• Standard 6-pin dual in-line package configuration for easy integration

Applications

• High-voltage isolation circuits
• Industrial control systems
• Power supply feedback loops

Procurement Notes

Verify the specific suffix '3G' against manufacturer documentation to confirm pinout and isolation ratings. Ensure compatibility with existing PCB footprints and thermal management requirements. Cross-reference datasheet specifications for absolute maximum ratings to prevent operational failure.

Selection Notes

Choose this component when base access for the phototransistor is required for speed or linearity adjustments. Confirm that the 7500Vpk isolation rating meets system safety standards. Evaluate the CTR range to ensure sufficient signal transmission under varying temperature conditions.

Part Context

Isocom Components specializes in infrared optoelectronic devices. The SFH609 series belongs to their family of optically coupled isolators designed for reliable performance. These devices combine an infrared emitting diode with a silicon phototransistor for electrical isolation.

Replacement Considerations

SFH600-4G shares similar packaging and basic functionality but may differ in isolation voltage and CTR specifications. Verify datasheet compatibility before substitution.