FOD617D3S

Overview

The FOD617D3S is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor output and utilizes a surface-mount SMD-4 package for compact integration. The device provides high isolation capability with a rated insulation voltage of 5000 Vrms, ensuring safety in high-voltage environments. Key electrical parameters include a maximum collector-emitter voltage of 70 V and a continuous collector current of 50 mA. The forward current rating is 50 mA with a typical forward voltage of 1.65 V. Switching performance is characterized by rise and fall times of 18 µs each. The unit operates within a temperature range of -55°C to +110°C and has a power dissipation rating of 200 mW.

Feature Summary

• Provides galvanic isolation between input and output circuits using light transmission.
• Features an NPN phototransistor output stage for digital signal switching applications.
• Designed for surface-mount technology (SMT) assembly processes.

Applications

• General-purpose signal isolation in industrial control systems
• Microcontroller interface circuits requiring voltage level shifting
• Power supply feedback loops for primary-side regulation

Procurement Notes

Verify the specific suffix 'D3S' against the manufacturer's latest datasheet to confirm pinout compatibility and packaging type. Ensure that the required isolation voltage ratings meet the safety standards of the target application environment. Cross-reference the component marking code with official documentation to authenticate the source and prevent counterfeit parts from entering the supply chain.

Selection Notes

Select this component when a robust, low-cost transistor output isolator is required for general-purpose applications. Consider the 18 µs switching speed limitations compared to faster logic-output alternatives if high-frequency data transmission is necessary. Evaluate the thermal management requirements based on the 200 mW power dissipation limit at elevated ambient temperatures.

Part Context

This part belongs to the FOD617 series of optocouplers, which are widely used for basic isolation tasks. The FOD617D3S variant specifically denotes the surface-mount configuration with the D3S suffix indicating the tape-and-reel or cut-tape packaging format suitable for automated assembly lines.

Replacement Considerations

Direct replacements may include other FOD617 variants with different suffixes for package changes, such as through-hole versions. Verify pin-to-pin compatibility before substituting with generic transistor output optocouplers from other manufacturers.