FOD617A3S

Overview

The FOD617A3S is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor output and operates 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 typical current transfer ratio of 40% at 10 mA, and rise/fall times of approximately 18 µs. It is housed in a 4-SMD Gull Wing package.

Feature Summary

• Provides high-voltage electrical isolation via a 5000 Vrms dielectric barrier.
• Utilizes an NPN phototransistor for reliable digital signal transmission.
• Designed for surface-mount integration using a compact 4-SMD Gull Wing form factor.

Applications

• General-purpose digital signal isolation in industrial control systems
• Microcontroller interface circuits requiring galvanic separation
• Power supply feedback loops for voltage regulation

Procurement Notes

Verify the specific suffix 'A3S' against the official datasheet to confirm the exact packaging configuration and tape-and-reel specifications. Ensure the component matches the required lead finish and RoHS compliance status for your assembly process. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a standard NPN output optocoupler with moderate speed (18 µs) is sufficient. It is suitable for applications where 5000 Vrms isolation is mandatory but high-speed data rates are not required. Consider thermal dissipation limits within the SMD package if operating near maximum current ratings.

Part Context

This device belongs to the FOD617 series of transistor output optocouplers from onsemi. The series is widely used for general-purpose isolation tasks. The 'A3S' designation typically indicates specific packaging and handling characteristics distinct from through-hole variants like the FOD617C.

Replacement Considerations

Compatible substitutes include other 4-pin transistor output optocouplers with similar isolation ratings and pinouts, such as the HCPL-2630 or PC817 equivalents, provided they meet the 5000 Vrms isolation and 50 mA collector current requirements.