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Vishay VOL617A-1T — Interface & Transceivers

VOL617A-1T Optocoupler, 5000Vrms, 4-SMD Gull Wing

MPNVOL617A-1T
End of Life

VOL617A-1T, optocoupler, 5000Vrms isolation, transistor output, 40-80% CTR at 5mA, 4-SMD Gull Wing, -55 to 110°C, active, RoHS3.

$0.54Ref. price · indicative, final on quote
Vishay VOL617A-1T datasheet (PDF)
Packaging4-SMD, Gull Wing
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

VOL617A-1T specifications
ParameterValue
Input typeDC
Output typeTransistor
MountingSurface Mount
Voltage - isolation5000Vrms
Voltage - output80V
Voltage - forward (Vf)1.16V
Current - output (Channel)50mA
Current transfer ratio80% @ 5mA
Current - DC forward (If)60 mA
Operating temperature-55°C ~ 110°C
PackageTape & Reel (TR); Cut Tape (CT)
Case4-SMD, Gull Wing
Channels1
Vce saturation400mV
Rise (Fall time)3.5µs, 5µs
Turn on (Turn off time)6µs, 5.5µs

Product details

The VOL617A-1T is a single-channel optocoupler with a phototransistor output and DC input. Its isolation rating is 5000Vrms.

CTR range at 5mA — sizing the drive margin

The current transfer ratio (CTR) is specified at 40% minimum and 80% maximum, both measured at a forward current of 5mA. That means with 5mA through the LED side, the phototransistor can sink between 2mA and 4mA on the output — enough headroom to guarantee a solid logic low into a 5V CMOS or TTL input. The 40% floor is the number to design around for worst-case drive; if your load needs more than 2mA at the output, you either increase the LED current (up to the 60mA absolute max) or pick a higher-CTR bin. The tight 40-80% spread also helps keep the on-state voltage consistent across reels, which matters for analog-level sensing or current-loop interfaces.

Switching speed and temperature range

Rise and fall times are 3.5µs and 5µs typical, with turn-on and turn-off times of 6µs and 5.5µs.

This removes the obsolescence risk that often plagues older optocouplers.

Frequently asked questions

What is the isolation voltage of VOL617A-1T?

Buyers need to confirm if the part meets their safety isolation requirements for their circuit.

Where can I buy genuine VOL617A-1T with short lead time?

Sourcing buyers need to quickly find authorized distributors to avoid counterfeit and minimize downtime.

Is VOL617A-1T a direct replacement for PC817 or 4N35?

Maintenance techs and engineers need to know if this part can swap in without changing the board design.

What is the typical current transfer ratio (CTR) range for VOL617A-1T at 5mA?

Design engineers need exact CTR values to ensure proper signal transmission and gain in their application.

How much does VOL617A-1T cost in volume?

Procurement needs pricing for BOM costing and to negotiate with distributors.

Is VOL617A-1T RoHS compliant and what is its lifecycle status?

Brokers and buyers must confirm regulatory compliance and long-term availability before volume purchase.