SFH6916

Overview

The SFH6916 is a quad phototransistor output optocoupler from Vishay, featuring four independent channels in a 16-pin SSOP package. It utilizes a GaAs infrared emitter coupled to silicon planar phototransistors. Key electrical parameters include an isolation voltage of 3750 Vrms and a current transfer ratio ranging from 50% to 300%. The device supports a maximum forward current of 50 mA with a typical forward voltage of 1.4 V. Operating temperatures range from -55°C to +100°C, with rise and fall times specified at 5.5 μs and 7 μs respectively.

Feature Summary

• Integrates four independent optical channels within a compact surface-mount package for space-efficient circuit design.
• Provides high-voltage electrical isolation between input and output circuits using GaAs infrared emitters and silicon detectors.
• Features logic-compatible NPN phototransistor outputs suitable for digital signal transmission applications.

Applications

• Data communication interfaces requiring multi-channel isolation
• Industrial control systems with multiple isolated inputs or outputs
• Computer peripheral interface circuits

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging and specifications. Confirm that the component meets required safety certifications such as UL, EN, and CSA for the intended application environment. Cross-reference the datasheet revision date to ensure compatibility with current design standards and regulatory requirements.

Selection Notes

Select this component when multi-channel isolation is required in a single package to reduce board space. Consider the 3750 Vrms isolation rating for high-noise environments. Ensure the operating temperature range of -55°C to +100°C aligns with system thermal constraints. Verify that the CTR range of 50-300% provides sufficient gain for the downstream logic levels.

Part Context

The SFH6916 belongs to the SFH series of optocouplers manufactured by Vishay Semiconductor Opto Division. This series focuses on providing reliable optical isolation solutions for various electronic applications. The quad configuration distinguishes it from single or dual channel variants, offering integrated multi-path isolation capabilities within the same footprint family.

Replacement Considerations

Direct substitutes may include other quad optocouplers with similar pinouts and electrical characteristics. Verify compatibility regarding isolation voltage, current transfer ratio, and package dimensions before substitution. Consult Vishay's official cross-reference guides for approved alternative part numbers.