SFH6186-4T

Overview

The SFH6186-4T is a single-channel transistor output optocoupler manufactured by Vishay Semiconductors. It features an NPN phototransistor output and operates in a surface-mount SMD-4 package. The device provides an insulation voltage of 5300 Vrms and supports a maximum collector-emitter voltage of 55 V with a peak collector current of 100 mA. Key electrical parameters include a forward current of 60 mA, a forward voltage of 1.5 V, and a power dissipation of 150 mW. The current transfer ratio ranges from 160% to 320%, with rise and fall times of 3.5 µs and 5 µs respectively. Operating temperatures span from -55°C to +100°C.

Feature Summary

• Provides high-voltage isolation capability for signal transmission between isolated circuits
• Utilizes a compact surface-mount package design suitable for automated assembly processes
• Features fast switching characteristics with defined rise and fall time specifications

Applications

• Industrial control systems requiring galvanic isolation
• Communication equipment interface circuits
• Power supply feedback loops

Procurement Notes

Verify the specific suffix '4T' corresponds to the required tape-and-reel packaging configuration rather than tube or cut-tape formats. Confirm that the CTR range of 160-320% aligns with system gain requirements. Ensure compliance with RoHS directives and check for any recent PCN updates regarding frame plating or material changes before finalizing procurement orders.

Selection Notes

Select this component when a high isolation voltage of 5300 Vrms is mandatory alongside moderate speed requirements. The NPN phototransistor output is suitable for standard logic interfacing. Consider the 160-320% CTR window for biasing stability. Evaluate thermal management needs given the 150 mW power dissipation limit in enclosed surface-mount applications.

Part Context

This part belongs to the SFH6186 series of transistor output optocouplers. Variants within this family differ primarily by current transfer ratio bins and packaging styles. The SFH6186-4T specifically denotes the higher CTR bin (160-320%) packaged in reels for high-volume surface-mount production lines.

Replacement Considerations

Direct substitutes within the same manufacturer line include SFH6186-3T (CTR 100-200%) and SFH6186-5T (if available in reel). Cross-manufacturer replacements require matching 5300 Vrms isolation, NPN output type, and compatible pinout geometry.