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Infineon Technologies IRL3705NPBF

IRL3705NPBF HEXFET N-Ch MOSFET, 55V 89A TO-220AB

MPNIRL3705NPBF
End of Life

Infineon HEXFET N-Channel MOSFET, IRL3705NPBF, 55 V Vdss, 89 A continuous drain current, 10 mOhm Rds(on) max at 46 A, TO-220AB through-hole package.

$1.85Ref. price · indicative, final on quote
Infineon Technologies IRL3705NPBF datasheet (PDF)
PackagingTO-220-3
RoHSROHS3 Compliant
SeriesHEXFET®
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

IRL3705NPBF specifications
ParameterValue
SeriesHEXFET®
FET typeN-Channel
MountingThrough Hole
Drain to source voltage55 V
Drive voltage (Max rds on, min rds on)4V, 10V
Current - continuous drain (Id) @ 25°C89A (Tc)
Power dissipation170W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageTube
Vgs±16V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id2V @ 250µA
Rds on (Max) @ id, vgs10mOhm @ 46A, 10V
Gate charge (Qg) (Max) @ vgs98 nC @ 5 V
Input capacitance (Ciss) (Max) @ vds3600 pF @ 25 V

Product details

10 mOhm at 46 A — the switching-loss anchor

The IRL3705NPBF: The 98 nC gate charge at 5 V sets the switching-loss budget.

Gate threshold and drive-voltage window

175 °C junction — military-grade thermal headroom

Input capacitance and switching speed

The input capacitance Ciss is 3600 pF typical at 25 V drain-source.

The ROHS3 compliance is confirmed. The TO-220AB package is widely stocked across the spot market, but the date-code traceability and laser-etch consistency should be verified on any gray-market lot — the HEXFET series is a common target for re-marked stock.

Frequently asked questions

Can I use IRL3705NPBF for motor control?

Yes, the 55 V Vdss and 89 A continuous rating make the IRL3705NPBF suitable for 12 V and 24 V DC motor drives, provided the inductive-load ringing does not exceed the 55 V breakdown. The 10 mOhm Rds(on) keeps conduction losses low at high current, and the 98 nC gate charge is manageable for PWM frequencies up to several tens of kilohertz with an appropriate gate driver. The 175 °C junction rating gives headroom for the thermal cycling typical in motor-start and stall conditions.