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onsemi FOD3120V — Power Management (PMIC / Gate Driver)

FOD3120V onsemi Optoisolator Gate Driver 3A 5000Vrms 8-DIP

MPNFOD3120V
End of Life

onsemi FOD3120V, single-channel optocoupled gate driver, 3 A peak output, 5000 Vrms isolation, 8-DIP through-hole package

$2.03Ref. price · indicative, final on quote
onsemi FOD3120V datasheet (PDF)
Packaging8-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

FOD3120V specifications
ParameterValue
MountingThrough Hole
Voltage - isolation5000Vrms
Voltage - output supply15V ~ 30V
Voltage - forward (Vf)1.5V
Current - peak output3A
Current - output high, low2A, 2A
Current - DC forward (If)25 mA
Operating temperature-40°C ~ 100°C
Pulse width distortion100ns
Approval agencyIEC, UL
PackageTube
TechnologyOptical Coupling
Case8-DIP (0.300\", 7.62mm)
Channels1
Rise (Fall time)60ns, 60ns
Propagation delay tpLH (tpHL)400ns, 400ns
Common mode transient immunity35kV/µs

Product details

3 A peak gate drive with 5000 Vrms isolation

The FOD3120V is a single-channel optocoupled gate driver from onsemi, delivering 3 A peak output current with 5000 Vrms isolation — enough to drive medium-power IGBTs and MOSFETs in motor drives and industrial inverters without a separate booster stage.

60 ns switching with 35 kV/µs transient immunity

Maximum propagation delay is 400 ns with pulse-width distortion capped at 100 ns, giving the designer a predictable timing budget for dead-time insertion.

Supplied in Tube for the 8-DIP through-hole package. The through-hole form factor suits prototype builds, low-volume production, and rework scenarios where a soldering iron is preferred over a reflow oven.

Supply range 15 V to 30 V, industrial temperature grade

The output supply rail accepts 15 V to 30 V, covering standard gate-drive voltages for IGBTs (15 V on, -5 V to -15 V off) and MOSFETs (10 V to 20 V). Operating temperature from -40°C to 100°C suits industrial enclosures and outdoor telecom cabinets without forced cooling.

Frequently asked questions

Is FOD3120V a replacement for HCPL-3120?

The FOD3120V and HCPL-3120 share the same function — single-channel optocoupled gate driver with 3 A peak output and 5000 Vrms isolation — and are often cross-shopped. Both use an 8-DIP through-hole package. Confirm pin compatibility from the respective datasheets before substituting on an existing board.

What is the maximum peak output current of FOD3120V?

The FOD3120V is rated for 3 A peak output current. The high/low source-sink capability is 2 A each. This drive strength is sufficient for most medium-power IGBTs and MOSFETs in the 600 V / 20 A to 50 A range.

Is FOD3120V compatible with 15V or 30V supplies?

Yes — the output supply voltage range is 15 V to 30 V. It operates directly on a 15 V gate-drive rail common for IGBTs, or on a 24-30 V rail for high-side MOSFET drivers with bootstrap circuits.