SFH690BT3

Overview

The SFH690BT3 is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output with a current transfer ratio ranging from 100% to 300%. The device provides an insulation voltage of 3750 Vrms and operates within a temperature range of -55°C to +100°C. Key electrical parameters include a maximum collector-emitter voltage of 70 V, a maximum forward current of 50 mA, and a typical forward voltage of 1.4 V. The component supports surface mount installation in a 4-SOP package.

Feature Summary

• High isolation voltage capability for safe signal transmission
• Wide current transfer ratio range for flexible gain control
• Robust thermal performance across extended industrial temperatures

Applications

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

Procurement Notes

Verify the specific suffix configuration against official Vishay documentation to ensure alignment with required current transfer ratio specifications. Confirm RoHS compliance status and moisture sensitivity level prior to integration into production workflows. Cross-reference datasheet revisions to validate parameter consistency.

Selection Notes

Select this component when high isolation voltage and wide CTR tolerance are required for reliable signal coupling. Ensure input current limits do not exceed 50 mA to maintain device integrity. Verify that the 4-SOP package dimensions fit the target PCB layout constraints before finalizing the design.

Part Context

This part belongs to the SFH690 series of transistor output optocouplers designed for general-purpose isolation applications. The series offers various current transfer ratio options to suit different circuit requirements while maintaining consistent packaging and isolation characteristics.

Replacement Considerations

SFH690ABT and SFH690AT are related variants within the same family offering different current transfer ratio ranges.