SFH601-3XG

Overview

The SFH601-3XG is a single-channel through-hole optocoupler manufactured by Isocom Components, utilizing the Vishay SFH601 series architecture. It features an NPN phototransistor output and a DIP-6 package. The device provides electrical isolation with a rated voltage of 5000 Vrms. Key electrical parameters include a maximum forward current of 60 mA, a typical forward voltage of 1.65 V, and a collector-emitter saturation voltage of 400 mV. The current transfer ratio ranges from 100% to 200%. It supports a maximum collector current of 50 mA and operates within a temperature range of -55°C to +100°C.

Feature Summary

• Provides galvanic isolation between input and output circuits using an infrared LED and NPN phototransistor pair.
• Designed for through-hole mounting in standard DIP-6 packages for reliable PCB integration.
• Offers high common-mode transient immunity suitable for noise-sensitive digital signal transmission.

Applications

• Digital signal isolation in microprocessor-based control systems
• Interface circuits for solid-state relays and switching power supplies
• Isolation barriers in industrial communication protocols

Procurement Notes

Verify that the specific suffix XG corresponds to the required lead frame configuration or tape-and-reel packaging variant as defined by the manufacturer's official documentation. Confirm compliance with relevant safety standards such as UL and VDE certifications applicable to the exact manufacturing batch before finalizing procurement specifications.

Selection Notes

Select this component when a single-channel isolation solution with moderate speed and high CTR is required. Ensure the operating environment stays within the specified temperature limits. Compare the 100-200% CTR range against system requirements to guarantee sufficient output drive capability without exceeding the maximum collector current rating of 50 mA during peak operation.

Part Context

This part belongs to the SFH601 family of transistor-output optocouplers produced under license or distribution by Isocom Components. The family includes variants with different pin counts and configurations, such as the SFH609 series. The SFH601-3 specifically denotes the six-pin DIP configuration optimized for general-purpose isolation applications requiring robust performance and standardized footprint compatibility.

Replacement Considerations

Direct substitutes include the Vishay SFH601-3 and compatible generic equivalents like the PC817 series, provided the pinout and electrical ratings match. Verify that alternative parts meet the same isolation voltage and CTR specifications to ensure functional equivalence in existing circuit designs.