SFH610A-4

Overview

The SFH610A-4 is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output and utilizes a DIP-4 through-hole package. The device provides an isolation test voltage of 5300 VRMS and supports a maximum collector-emitter voltage of 70 V. Key electrical parameters include a forward current rating of 60 mA, a typical forward voltage of 1.65 V, and a collector current capacity of 100 mA. The component exhibits a current transfer ratio ranging from 160% to 320%, with a typical rise time of 4 μs.

Feature Summary

• Provides high-voltage isolation capability with a test voltage rating of 5300 VRMS for safe signal transmission across isolated circuits.
• Delivers high current transfer efficiency within the specified range, ensuring reliable switching performance for digital applications.
• Features low saturation voltage characteristics to minimize power loss during conduction states in the output circuit.

Applications

• General-purpose digital signal isolation in industrial control systems
• Interface circuits between microprocessors and peripheral devices
• Switching power supply feedback loops requiring galvanic isolation

Procurement Notes

Verify the specific manufacturer part number against official Vishay documentation to confirm exact electrical tolerances and pinout configurations. Ensure that the procurement source provides valid traceability data and compliance certificates matching the component specifications. Cross-reference technical datasheets to validate operational limits before integration into final designs.

Selection Notes

Select this component when high isolation voltage and robust current transfer ratios are required for single-channel applications. Consider the DIP-4 package constraints and thermal dissipation limits relative to the maximum power dissipation rating. Evaluate the operating temperature range and reverse voltage capabilities to ensure compatibility with the target circuit environment.

Part Context

This component belongs to the SFH series of optocouplers produced by Vishay Semiconductor Opto Division. It serves as a discrete semiconductor solution for electrical isolation tasks. The device is designed for general-purpose use where standard transistor output characteristics and moderate speed performance are sufficient for system requirements.

Replacement Considerations

The VO610A-4 is documented as a recommended alternative part number for the SFH610A-4. Verify functional equivalence and pin compatibility before substitution.