FOD816SD

Overview

The FOD816SD is a single-channel optoisolator from onsemi featuring a Darlington transistor output. It provides high current transfer ratios, with minimum and maximum CTR values of 600% and 7500% respectively at 1mA input. The device offers 5000Vrms isolation voltage and operates within a temperature range of -30°C to 100°C. Typical rise and fall times are 60µs and 53µs. It is housed in a 4-SMD鸥翼 package.

Feature Summary

• High gain Darlington output for sensitive signal detection
• Robust 5000Vrms insulation barrier for safety isolation
• Wide operating temperature range suitable for industrial environments

Applications

• Industrial automation control systems
• Power supply feedback loops
• Signal isolation in microprocessor interfaces

Procurement Notes

Verify the specific suffix and packaging configuration against the official datasheet before ordering. Confirm that the Darlington output characteristics align with the target circuit requirements. Ensure compliance with relevant safety certifications such as UL and VDE if required by the end application. Check for obsolescence status or recommended replacement parts if availability is a concern.

Selection Notes

Select this component when high current gain is necessary to drive loads directly without additional amplification. The Darlington structure provides superior sensitivity compared to standard phototransistor outputs. Consider the slower switching speeds inherent to Darlington configurations when designing for high-frequency applications. Verify thermal management requirements given the power dissipation limits.

Part Context

This part belongs to the FOD816 series of optocouplers designed for general-purpose isolation. It complements other variants in the family offering different output types or packaging options. The series is widely used in applications requiring reliable electrical isolation between low-voltage control circuits and higher-voltage power stages.

Replacement Considerations

LTV-8141S

FAQ

What is the typical current transfer ratio of the FOD816SD?

The current transfer ratio ranges from a minimum of 600% to a maximum of 7500% at an input current of 1mA.

Is the FOD816SD suitable for AC input signals?

Yes, the datasheet specifies that the input type supports both AC and DC signals.