FOD617C

Overview

The FOD617C is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor output with a maximum collector-emitter voltage of 70 V and a collector current of 50 mA. The device provides 5000 Vrms isolation voltage between input and output. Key electrical parameters include a forward current of 50 mA, a forward voltage of 1.4 V to 1.65 V, and a power dissipation of 200 mW. The current transfer ratio ranges from 100% to 200% at a forward current of 10 mA. Typical switching times are 4 µs for rise time and 3 µs for fall time. The component operates within a temperature range of -55°C to +110°C and is available in a 4-DIP package.

Feature Summary

• Provides high-voltage electrical isolation via a 5000 Vrms dielectric barrier between the infrared LED input and the NPN phototransistor output.
• Delivers fast signal transmission with typical rise and fall times of 4 µs and 3 µs respectively, suitable for general-purpose digital isolation.
• Ensures reliable operation across a wide industrial temperature range from -55°C to +110°C.

Applications

• General-purpose digital signal isolation in industrial control systems
• Isolation interfaces for microcontroller-based communication protocols
• Power supply feedback loops requiring galvanic separation

Procurement Notes

Verify the specific suffix code against the official datasheet to confirm pinout configuration and packaging type. Ensure the selected variant matches the required insulation class and regulatory approvals such as UL or VDE for the target application. Confirm that the operating temperature range meets the environmental specifications of the end product.

Selection Notes

Select this component when a standard NPN phototransistor output is required for cost-effective isolation. Compare the current transfer ratio and switching speeds against alternative models if higher bandwidth or different output logic levels are needed. Ensure the package dimensions fit the printed circuit board layout constraints.

Part Context

The FOD617C belongs to the FOD series of optocouplers from onsemi. This series includes various configurations with different output types and packaging options. The FOD617C specifically utilizes a 4-DIP package, distinguishing it from surface-mount variants like the FOD817DS or other channel counts within the broader family.

Replacement Considerations

Check for direct replacements within the same FOD series or equivalent parts from other manufacturers offering identical pinouts and electrical characteristics. Verify that any substitute maintains the same isolation voltage rating and thermal performance.