This datasheet introduces the features and characteristics of Fairchild's FOD814 series, FOD617 series, and FOD817 series 4-pin high operating temperature phototransistor optocouplers.
The FOD814, FOD617 and FOD817 series are 4‑pin phototransistor optocouplers that combine a gallium‑arsenide infrared LED with a silicon phototransistor. They offer high isolation (5000 Vrms), wide operating temperature ranges and various current‑transfer ratios for applications such as AC line monitoring, power‑supply regulation and digital logic interfacing.
The document lists absolute maximum ratings, detailed electrical characteristics (forward voltage, collector‑emitter breakdown, CTR ranges), isolation parameters, typical optical performance curves, and mechanical package dimensions for both through‑hole and surface‑mount versions. Recommended lead‑free reflow soldering profiles are also provided.
| Input‑Output Isolation Voltage | 5000 Vrms |
|---|---|
| Minimum Collector‑Emitter Breakdown Voltage (BVCEO) | 70 V |
| Current Transfer Ratio (CTR) – FOD617A | 40 % – 80 % |
The FOD814 series provides an input‑output isolation voltage of 5000 Vrms.