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Vishay VOS618A-3X001T — Optoisolators
Vishay

VOS618A-3X001T Optocoupler, 3750Vrms, 4-SSOP, Vishay

MPNVOS618A-3X001T
End of Life

Vishay VOS618A-3X001T optocoupler, 1-channel DC input, transistor output, 3750Vrms isolation, 100-200% CTR at 1mA, 80V output max, 50mA output current, 4-SSOP package, surface mount, -55 to 110°C.

$0.62Ref. price · indicative, final on quote
VOS618A-3X001T datasheet
Packaging4-SOIC (0.173", 4.40mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

VOS618A-3X001T Technical Specifications
ParameterValue
Input typeDC
Output typeTransistor
Mounting typeSurface Mount
Voltage - isolation3750Vrms
Voltage - output80V
Voltage - forward (Vf)1.1V
Current - output (Channel)50mA
Current transfer ratio200% @ 1mA
Current - DC forward (If)50 mA
Operating temperature-55°C ~ 110°C
PackageTape & Reel (TR); Cut Tape (CT)
Case4-SOIC (0.173\", 4.40mm Width)
Number of channels1
Vce saturation400mV
Rise (Fall time)5µs, 7µs
Turn on (Turn off time)5µs, 8µs

Product details

3750Vrms isolation in a compact 4-SSOP

The Vishay VOS618A-3X001T is a single-channel phototransistor optocoupler in a 4-SSOP package, providing 3750Vrms galvanic isolation between a DC input LED and a transistor output. It is designed for industrial control, PLC I/O modules, motor drive feedback, and medical equipment where signal integrity across a potential barrier is required.

CTR range and what it drives

The current transfer ratio (CTR) is specified at 100% minimum and 200% maximum, measured at a forward current of 1 mA. This means the output transistor can sink at least as much collector current as the LED forward current, with headroom up to 2×. For a design driving a 5 mA load, a 1 mA LED current guarantees saturation across temperature and over the life of the part.

Switching speed and output ratings

Typical rise and fall times are 5 µs and 7 µs respectively; turn-on and turn-off times are 5 µs and 8 µs. These figures suit low-to-moderate speed applications such as 10 kHz PWM feedback, relay coil drive, or status LED indication, but not high-speed serial isolation. The output transistor is rated for 80 V maximum collector-emitter voltage and 50 mA continuous output current per channel, covering most 24 V industrial logic and 12 V automotive loads with margin.

Frequently asked questions

Is VOS618A-3X001T RoHS compliant?

Yes, it is ROHS3 Compliant per the lifecycle record.

How does VOS618A-3X001T compare to VOS618A-2X001T?

Both parts share the same 4-SSOP package, 3750Vrms isolation, and 80 V / 50 mA output ratings. The difference is the CTR bin: the VOS618A-3X001T guarantees 100–200% CTR at 1 mA, while the VOS618A-2X001T has a lower CTR range (typically 63–125% at 1 mA). For designs requiring higher drive margin or lower LED current, the -3 bin is preferred; for cost-sensitive builds where CTR margin is less critical, the -2 bin may be a drop-in alternate after verifying saturation at minimum CTR.