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onsemi FOD073LR2 — Discrete Semiconductors

FOD073LR2 onsemi Optoisolator 2.5kV 2Ch Darlington 8-SOIC

MPNFOD073LR2
End of Life

onsemi FOD073LR2, dual-channel Darlington-output optocoupler, 8-SOIC surface-mount package, 2500 Vrms isolation, 400%–7000% CTR at 500 µA forward current.

$3.09Ref. price · indicative, final on quote
onsemi FOD073LR2 datasheet (PDF)
Packaging8-SOIC (0.154", 3.90mm Width)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

FOD073LR2 specifications
ParameterValue
Input typeDC
Output typeDarlington
MountingSurface Mount
Voltage - isolation2500Vrms
Voltage - output7V
Voltage - forward (Vf)1.35V
Current - output (Channel)60mA
Current transfer ratio7000% @ 500µA
Current - DC forward (If)20 mA
Operating temperature-40°C ~ 85°C
PackageBulk
Case8-SOIC (0.154\", 3.90mm Width)
Channels2
Turn on (Turn off time)5µs, 25µs

Product details

Dual Darlington optocoupler in 8-SOIC

The FOD073LR2 is a dual-channel Darlington-output optocoupler from onsemi in a standard 8-SOIC package (0.154", 3.90 mm width). It accepts DC input and delivers up to 60 mA per channel at a maximum output voltage of 7 V. The current transfer ratio spans 400% minimum to 7000% maximum, both measured at 500 µA forward current — the Darlington gain stage gives you a wide operating margin for driving logic inputs or low-current relays. Isolation is rated at 2500 Vrms, suitable for basic functional isolation in industrial control, motor drives, and isolated power-supply feedback loops.

Switching speed and drive current

Typical turn-on time is 5 µs and turn-off time is 25 µs — the slower turn-off is characteristic of the Darlington output stage and limits the part to switching applications below about 20 kHz.

Active lifecycle and ordering

The surface-mount 8-SOIC footprint is widely used and easy to place with standard pick-and-place equipment.

Frequently asked questions

What is the current transfer ratio (CTR) range of FOD073LR2?

The CTR is 400% minimum to 7000% maximum, both specified at a forward current of 500 µA. The wide range is typical for Darlington-output optocouplers and gives you headroom for load-current variation over temperature and device tolerance.

Is FOD073LR2 compatible with FOD073L?

The FOD073LR2 is the Bulk (tube) variant of the FOD073L family. The 'R2' suffix indicates the packaging format — the die, electrical specs, and 8-SOIC package are identical to the tape-and-reel version (FOD073L). If your BOM calls for FOD073L in tube, the FOD073LR2 is a direct drop-in.