SFH620A / SFH6206 is an optocoupler with good CTR linearity, high isolation voltage, and low coupling capacitance. They are suitable for signal transmission between two electrically separated circuits.
The SFH620A (DIP) and SFH6206 (SMD) are optocouplers featuring a GaAs infrared emitter and a silicon phototransistor detector. They provide high isolation voltage, low saturation voltage, and a range of current transfer ratios (CTR) for reliable signal transmission between isolated circuits.
The document lists absolute maximum ratings, electrical and switching characteristics, package dimensions, and environmental compliance information. It also includes Vishay’s ozone‑depleting substances policy and legal disclaimer.
| Isolation test voltage | 5300 VRMS |
|---|---|
| Collector‑emitter voltage (VCEO) | 70 V |
| Current Transfer Ratio (CTR) – SFH620A‑1 | 40‑125 % |
| Current Transfer Ratio (CTR) – SFH620A‑3 | 100‑320 % |
| Forward voltage (VF) at IF = ±60 mA | 1.25‑1.65 V |
| Coupling capacitance (CC) | 0.2 pF |
| Turn‑on time (ton) | 3.0 µs |
The isolation test voltage is 5300 VRMS.
The device is rated for a collector‑emitter voltage of 70 V.
Typical forward voltage ranges from 1.25 V to 1.65 V.
The SFH620A‑3 version provides a CTR of 100 % to 320 %.