SFH608-4X016

Overview

The SFH608-4X016 is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output housed in a PDIP-6 through-hole package. Key electrical parameters include a maximum collector-emitter voltage of 55 V, a maximum collector current of 50 mA, and a power dissipation of 150 mW. The device provides an isolation voltage of 5300 Vrms with a typical forward voltage of 1.5 V at a maximum forward current of 50 mA. The current transfer ratio ranges from 160% to 320%, and the saturation voltage is limited to 400 mV.

Feature Summary

• Provides high current transfer ratio performance at low input currents for efficient signal transmission.
• Features an integrated base connection on the output transistor to facilitate faster switching speeds and improved linearity.
• Offers robust galvanic isolation between input and output circuits via a 5300 Vrms dielectric barrier.

Applications

• High-speed data communication interfaces requiring fast response times
• Industrial control systems needing reliable signal isolation
• Power supply feedback loops for voltage regulation

Procurement Notes

Verify the specific suffix -4X016 against the official Vishay datasheet to confirm packaging quantity and tape-and-reel specifications. Ensure the procurement channel sources components directly from authorized distributors to guarantee authenticity and traceability. Check RoHS compliance status and lead times prior to ordering, as availability may vary based on production cycles.

Selection Notes

Select this component when application requirements demand a balance between high current gain and rapid switching capabilities. The built-in base terminal allows for external biasing to optimize speed or linearity, distinguishing it from standard phototransistor couplers. Confirm that the 55 V collector voltage and 50 mA current limits align with the load requirements of the target circuit design.

Part Context

This part belongs to the SFH608 series of high-speed optocouplers designed for demanding applications. The series is characterized by its ability to operate effectively at low drive currents while maintaining high CTR. The SFH608-4X016 specifically utilizes a 6-pin DIP configuration, making it suitable for legacy and modern through-hole PCB layouts requiring compact isolation solutions.

Replacement Considerations

The SFH608-4 is listed as obsolete; verify if the -4X016 variant remains active. Potential substitutes within the Vishay portfolio should be evaluated based on pin compatibility, CTR range, and switching time specifications to ensure functional equivalence without redesigning the host circuitry.