Dual-channel isolation in an 8-pin SOIC
The Vishay VOD206T is a dual-channel optoisolator packing two independent phototransistor outputs into a standard 8-SOIC package. Each channel provides 4000Vrms of galvanic isolation between the DC input LED and the output transistor, with a minimum current transfer ratio of 63% at 10mA forward current and a maximum of 125%. The output transistor can switch up to 50mA at 70V, making this part suitable for interfacing low-voltage logic to higher-voltage loads such as relay coils, solenoid valves, PLC input modules, and motor-drive feedback circuits.
Typical turn-on and turn-off times are 5µs and 4µs respectively — fast enough for 100 kHz-ish switching in industrial sensor readback, optoisolated serial data, or PWM gate-drive signals where the carrier frequency stays under a few tens of kilohertz. The 5µs rise and 4µs fall times (typical) are symmetrical enough that pulse-width distortion stays manageable for non-critical timing loops. If your application needs sub-microsecond propagation delays, this part is not the right fit — look at a digital isolator or a high-speed optocoupler instead.
Temperature range and industrial use
The 100°C upper limit is a derating consideration above 85°C ambient — the LED forward current may need to be backed off to stay within the die temperature budget, but for typical 5-10mA drive it's fine. This is not an automotive-grade part (no AEC-Q102 listing), so for under-hood or transmission-mounted isolation, look for a qualified alternative.