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FOD817S
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Product Detailed Parameters
- Description：OPTOISOLATOR 5KV 1CH TRANS 4-SMD
- Series：-
- Mfr：onsemi
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：5000Vrms
- Current Transfer Ratio (Min)：50% @ 5mA
- Current Transfer Ratio (Max)：600% @ 5mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：4µs, 3µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：70V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：200mV
- Operating Temperature：-55°C ~ 110°C
- Mounting Type：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-SMD
- Grade：-
- Qualification：-
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Overview
The FOD817S is a single-channel phototransistor optocoupler from onsemi's FOD series. It integrates a gallium arsenide infrared emitting diode with a silicon phototransistor in a surface-mount SMD-4 package. Key electrical parameters include a maximum collector-emitter voltage of 70 V, a forward current of 50 mA, and an isolation voltage of 5000 Vrms. The device features typical rise and fall times of 18 μs, a forward voltage of 1.4 V, and a power dissipation of 200 mW. Operating temperature ranges from -55°C to +110°C.
Feature Summary
- Integrates a gallium arsenide infrared LED with a silicon phototransistor for signal transmission
- Provides high-voltage isolation via a 5000 Vrms dielectric barrier
- Designed for surface-mount assembly in compact SMD-4 packages
Applications
- Signal isolation in industrial control systems
- Switch-mode power supply feedback loops
- Solid-state relay driver circuits
Procurement Notes
Verify the specific suffix against official datasheets to confirm package type and CMTI ratings. Ensure compliance with RoHS directives and check for automotive qualification status if required. Confirm lead times and availability through authorized distributors as stock levels fluctuate.
Selection Notes
Select this component for applications requiring standard-speed isolation with surface-mount constraints. Compare CMTI ratings against noise environments. Verify that the 50 mA forward current and 70 V collector voltage meet circuit requirements. Consider thermal management within the 200 mW dissipation limit.
Part Context
Part of the FOD817 family offering cost-effective isolation solutions. The 'S' suffix typically denotes surface-mount packaging variants within the broader DIP and SMD product line. Designed for general-purpose digital signal isolation in consumer and industrial electronics.
Replacement Considerations
Check pinout compatibility and CMTI specifications when substituting. Verify that alternative devices match the 5000 Vrms isolation and 18 μs switching speed requirements.
