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Vishay VO617A-3X018T — Optoisolators

VO617A-3X018T Vishay Optocoupler – 5300 Vrms, 100-200% CTR

MPNVO617A-3X018T
End of Life

Vishay VO617A-3X018T, single-channel DC-input transistor-output optocoupler, 5300 Vrms isolation, 100-200% CTR at 5 mA, 4-SMD Gull Wing surface-mount package.

$0.43Ref. price · indicative, final on quote
Vishay VO617A-3X018T datasheet (PDF)
Packaging4-SMD, Gull Wing
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

VO617A-3X018T specifications
ParameterValue
Input typeDC
Output typeTransistor
MountingSurface Mount
Voltage - isolation5300Vrms
Voltage - output80V
Voltage - forward (Vf)1.35V
Current - output (Channel)50mA
Current transfer ratio200% @ 5mA
Current - DC forward (If)60 mA
Operating temperature-55°C ~ 110°C
PackageBulk
Case4-SMD, Gull Wing
Channels1
Vce saturation400mV
Rise (Fall time)2µs, 2µs
Turn on (Turn off time)3µs, 2.3µs

Product details

Single-channel transistor-output optocoupler with 5300 Vrms isolation

The VO617A-3X018T from Vishay is a single-channel optocoupler with a phototransistor output, designed for DC input drive. Its 5300 Vrms isolation rating makes it suitable for breaking ground loops and providing safety isolation in power supplies, motor drives, and industrial controls.

CTR range and switching speed for BOM margin

Current transfer ratio spans 100% to 200% at a forward current of 5 mA, giving a 2:1 gain window that accommodates LED degradation and temperature drift without redesigning the load resistor. Typical rise and fall times are 2 µs each, with turn-on at 3 µs and turn-off at 2.3 µs — fast enough for 100 kHz switching or serial data isolation below 1 Mbps.

It is ROHS3 compliant.

4-SMD Gull Wing — rework-friendly footprint

Housed in a 4-SMD Gull Wing package, the leads are visible and accessible for inspection and hand rework. The 400 mV max Vce saturation at 50 mA output current means the transistor drops less than half a volt when fully on, keeping dissipation low in the 4-SMD body.

Frequently asked questions

What is the current transfer ratio of VO617A-3X018T?

The VO617A-3X018T has a CTR range of 100% to 200% at a forward current of 5 mA. This means the output collector current will be between 1 and 2 times the LED drive current under those conditions.

What is the difference between VO617A-3X018T and VO617A-4X018T?

The VO617A-3X018T and VO617A-4X018T are from the same Vishay family and share the same package and isolation rating. The key difference is the CTR bin: the -3 bin covers 100-200% at 5 mA, while the -4 bin covers a higher range (typically 160-320%). Choose the -3 if your design margins accommodate a lower gain spread.