FOD814A3SD

onsemi

onsemi FOD814A3SD, single-channel optoisolator, 5000Vrms isolation, AC/DC input, transistor output, 50-150% CTR at 1mA, surface-mount 4-SMD gull wing package.

onsemi FOD814A3SD
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[IN STOCK] In Stock: 34 pcs
$1.21/ pc

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MOQ 1 · Tape & Reel (TR); Cut Tape (CT) · RoHS · EIA-481 · DAP/DDP · T/T

Technical specifications

FOD814A3SD specifications
Parameter / AttributeSpecification / Value
Input typeAC, DC
Output typeTransistor
MountingSurface Mount
Voltage - isolation5000Vrms
Voltage - output70V
Voltage - forward (Vf)1.2V
Current - output (Channel)50mA
Current transfer ratio150% @ 1mA
Current - DC forward (If)50 mA
Operating temperature-55°C ~ 105°C
PackageTape & Reel (TR); Cut Tape (CT)
Case4-SMD, Gull Wing
Channels1
Vce saturation200mV
Rise (Fall time)4µs, 3µs

Technical details

Isolation barrier and input flexibility

The output is a phototransistor rated for 70V maximum collector-emitter voltage and 50mA continuous current per channel. Reinforced isolation of 5000Vrms supports safety barrier compliance for industrial controls, power-supply feedback loops, and PLC I/O modules where galvanic separation between high-voltage and low-voltage domains is mandatory.

CTR window and switching speed

Current transfer ratio is specified from 50% minimum to 150% maximum at a forward current of 1mA. This narrow CTR window reduces gain variation across reels compared to wider-bin parts, which simplifies feedback-loop compensation in isolated power supplies. Typical rise and fall times of 4µs and 3µs respectively are adequate for 50/60 Hz line-frequency sensing and low-speed digital isolation up to about 10 kbps. For faster serial interfaces like I²C or SPI, a logic-output optocoupler with higher data rate is needed.

Housed in a 4-SMD gull-wing package with a 4-SMD supplier device package designation. Rated for operation from -55°C to 105°C, covering most industrial and telecom enclosure environments. Not qualified to AEC-Q100 — for under-hood or chassis-mounted automotive applications, consider an AEC-grade optocoupler.

Sourcing and compliance status

No stock-holding claim is made; the part is sourced to order through our supply network.

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