Galvanic barrier with 5 kV isolation
The VO615A-2X009T is a single-channel, DC-input, transistor-output optoisolator from Vishay rated for 5000 Vrms isolation. That isolation voltage suits line-powered industrial interfaces—PLC digital inputs, motor drive feedback, and AC-mains crossing detection—where the primary side must stay galvanically separated from the low-voltage control logic.
CTR and switching speed for loop design
Current transfer ratio spans 63% to 125% at 10 mA forward current. The 2:1 max-to-min ratio means the designer can set the input LED current to guarantee the output saturates across all units without overdriving the LED. Turn-on time is 6 µs typical, turn-off 5 µs typical; rise/fall are 3 µs and 4.7 µs. That is fast enough for 10-100 kHz switching but not for high-speed digital isolation—keep it for status signals, relay drivers, and low-rate data paths.
Temperature range and output ratings
Full operating temperature is -55°C to 110°C, covering cold-start and warm industrial enclosures without derating. The output transistor handles up to 70 V and 50 mA continuous, with a saturation voltage of 300 mV max. That 70 V ceiling is typical for 24 V and 48 V industrial buses; stay below 50 V for reliable saturated switching.
Sourcing and compliance status
Vishay lists the VO615A-2X009T as Active and ROHS3 compliant.