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onsemi FOD2712AR2 — Optoisolators

FOD2712AR2 onsemi Optoisolator – 2500Vrms, 8-SOIC, Active

MPNFOD2712AR2
End of Life

onsemi FOD2712AR2, single-channel DC-input transistor-output optoisolator, 2500Vrms isolation, 8-SOIC surface-mount package, 100% to 200% current transfer ratio at 10 mA, -40°C to 85°C operating range.

$1.59Ref. price · indicative, final on quote
onsemi FOD2712AR2 datasheet (PDF)
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

FOD2712AR2 specifications
ParameterValue
Input typeDC
Output typeTransistor
MountingSurface Mount
Voltage - isolation2500Vrms
Voltage - output30V
Voltage - forward (Vf)1.5V (Max)
Current - output (Channel)50mA
Current transfer ratio200% @ 10mA
Operating temperature-40°C ~ 85°C
PackageTape & Reel (TR); Cut Tape (CT)
Case8-SOIC (0.154\", 3.90mm Width)
Channels1
Vce saturation400mV

Product details

Active production, 8-SOIC isolation for industrial control

The FOD2712AR2: It provides 2500Vrms galvanic isolation between a DC input and a transistor output, housed in an 8-SOIC package (0.154-inch body width) for surface-mount assembly. The current transfer ratio spans 100% to 200% at a forward current of 10 mA.

Parametric boundaries for BOM fit

Output transistor is rated for a maximum collector-emitter voltage of 30 V and continuous output current of 50 mA per channel. The Vce saturation is 400 mV maximum. If the application sees sustained ambient above 85°C, consider the FOD817ASD (rated to 110°C) — though its CTR and package differ.

Frequently asked questions

What is the current transfer ratio of FOD2712AR2?

The CTR is 100% minimum and 200% maximum, both specified at a forward current of 10 mA. This means at 10 mA LED drive the output transistor is guaranteed to sink at least 10 mA; the 200% ceiling tells you the maximum gain you need to budget for in the load resistor.

What is the difference between FOD2712 and FOD2712AR2?

The suffix 'AR2' indicates Tape & Reel packaging. The base FOD2712 is typically offered in tube or bulk. Electrically they are identical — same 2500Vrms isolation, same CTR range, same 8-SOIC package. The AR2 variant is the reeled version for automated assembly.