SFH615A-4X008T

Overview

The SFH615A-4X008T is a single-channel transistor output optocoupler manufactured by Vishay Semiconductors. It features an NPN phototransistor output and utilizes a surface-mount SMD-4 package. Key electrical parameters include a maximum collector-emitter voltage of 70 V, a maximum collector current of 50 mA, and a power dissipation rating of 150 mW. The device provides an insulation voltage of 5300 Vrms and operates within a temperature range of -55°C to +100°C. The forward current is rated at 60 mA with a forward voltage of 1.65 V. The current transfer ratio is specified at 160%, and the reverse voltage is limited to 6 V.

Feature Summary

• Provides high-voltage isolation capability through a robust dielectric barrier between input and output circuits.

Applications

• General-purpose signal isolation in electronic circuits
• Interface applications requiring galvanic separation

Procurement Notes

Verify the specific suffix X008T corresponds to the required surface-mount packaging configuration. Confirm that the 160% current transfer ratio meets the design requirements for the intended logic levels. Ensure the thermal management plan accounts for the 150 mW power dissipation limit during operation. Cross-reference the datasheet for precise mechanical dimensions to validate PCB footprint compatibility before finalizing procurement orders.

Selection Notes

Select this component when a surface-mount form factor is required for space-constrained designs. The 5300 Vrms insulation rating supports applications demanding significant potential difference between isolated sides. Consider the 50 mA collector current limit when driving loads directly. The operating temperature range suits standard industrial environments. Evaluate the CTR tolerance against circuit sensitivity requirements to ensure reliable switching performance across production batches.

Part Context

This part belongs to the SFH615A series of transistor output optocouplers from Vishay. It shares functional similarities with other variants in the family but differs in packaging and specific parameter tolerances. The series is designed for general isolation tasks, offering a balance of electrical performance and physical compactness suitable for modern printed circuit board assemblies.

Replacement Considerations

The VO615A-4 is listed as a recommended alternative with similar specifications.