onsemi FOD817CS, single-channel DC-input transistor-output optoisolator, 5000Vrms isolation, 4-SMD gull wing package, -55°C to 110°C operating range.
| Parameter | Value |
|---|---|
| Input type | DC |
| Output type | Transistor |
| Mounting | Surface Mount |
| Voltage - isolation | 5000Vrms |
| Voltage - output | 70V |
| Voltage - forward (Vf) | 1.2V |
| Current - output (Channel) | 50mA |
| Current transfer ratio | 400% @ 5mA |
| Current - DC forward (If) | 50 mA |
| Operating temperature | -55°C~110°C |
| Package | Tube |
| Case | 4-SMD, Gull Wing |
| Channels | 1 |
| Vce saturation | 200mV |
| Rise (Fall time) | 4µs, 3µs |
The FOD817CS provides 5000Vrms isolation between input and output, meeting reinforced isolation requirements for mains-connected industrial controls, power supplies, and motor drives. That 5kV rating is the spec that determines creepage and clearance on the PCB — the 4-SMD gull-wing package gives you a surface-mount footprint with enough pin spacing to hold off the voltage without conformal coating.
Current transfer ratio is binned 200% to 400% at 5mA forward current.
Buyers must confirm it meets their safety isolation requirements before purchase.
Designers and buyers need to ensure long-term availability and avoid last-time buy scenarios.
Engineers need to verify fit in their PCB layout (4-SMD gull wing) and correct pin connections.
Sourcing and maintenance often seek drop-in replacements or alternative brands for supply chain flexibility.
Buyers need to quickly find stock and compare pricing across distributors to close the BOM line.
Design engineers must ensure the output voltage drop is within their circuit’s swing limits.