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Infineon Technologies IRF3808PBF

IRF3808PBF MOSFET, N-Channel 75V 140A TO-220AB

MPNIRF3808PBF
End of Life

Infineon HEXFET IRF3808PBF, N-Channel MOSFET, 75V Vdss, 140A Id, 7mOhm Rds(on) max @ 82A, 10V, TO-220AB package, -55°C to 175°C junction temperature.

$3.18Ref. price · indicative, final on quote
PackagingTO-220-3
RoHSROHS3 Compliant
SeriesHEXFET®
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

IRF3808PBF specifications
ParameterValue
SeriesHEXFET®
FET typeN-Channel
MountingThrough Hole
Drain to source voltage75 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C140A (Tc)
Power dissipation330W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageTube
Vgs±20V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id4V @ 250µA
Rds on (Max) @ id, vgs7mOhm @ 82A, 10V
Gate charge (Qg) (Max) @ vgs220 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds5310 pF @ 25 V

Product details

What the gate charge and capacitance mean for the driver

The 220 nC figure also sets the gate-drive power loss: at 100 kHz, the driver dissipates about 220 mW just charging and discharging the gate, which matters for the driver's thermal budget.

Temperature range and the real current limit

The 140 A continuous rating is at 25°C case temperature — in a real board with a heatsink, the allowable current derates as the junction rises. At 100°C case temperature, the current capability drops to roughly 100 A, depending on the thermal resistance of the mounting interface. The 175°C maximum junction lets the part survive overload conditions that would kill a 150°C-rated MOSFET, but continuous operation near that ceiling requires a substantial heatsink and forced airflow.

Active production — no LTB scramble on this BOM line

For a repair bench or a production BOM, this means the part can be sourced through standard distribution without worrying about a looming obsolescence window. The TO-220AB package is a common footprint, so second-sourcing from other manufacturers with compatible pinouts is straightforward if dual-source security is needed.

Frequently asked questions

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Is IRF3808PBF in stock for immediate delivery?

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What is the datasheet for IRF3808PBF?

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What is the equivalent or replacement for IRF3808PBF?

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Is IRF3808PBF obsolete or nearing end of life?

Lifecycle status affects long-term availability and redesign decisions.