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Infineon Technologies IRF135B203

IRF135B203 N-Channel MOSFET, 135V 129A TO-220-3 StrongIRFET™

MPNIRF135B203
End of Life

Infineon StrongIRFET™, N-Channel MOSFET, IRF135B203, 135 V drain-source, 129 A continuous drain, 8.4 mOhm Rds(on) at 77 A, 10 V gate drive, 270 nC gate charge, TO-220-3, -55 to 175 °C.

$2.66Ref. price · indicative, final on quote
PackagingTO-220-3
RoHSROHS3 Compliant
SeriesStrongIRFET™
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

IRF135B203 specifications
ParameterValue
SeriesStrongIRFET™
FET typeN-Channel
MountingThrough Hole
Drain to source voltage135 V
Drive voltage (Max rds on, min rds on)10V
Current - continuous drain (Id) @ 25°C129A (Tc)
Power dissipation441W (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, vgs8.4mOhm @ 77A, 10V
Gate charge (Qg) (Max) @ vgs270 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds9700 pF @ 50 V

Product details

Thermal and temperature range — where it fits

The TO-220-3 through-hole package allows a large clip-on or bolt-down heatsink, which is the practical path to extracting the full current rating.

Gate drive and switching considerations

A gate resistor in the 5–15 Ohm range controls ringing without slowing the edge too much.

The ROHS3 compliance means it meets the latest RoHS exemption-free requirements.

Frequently asked questions

What is the maximum drain current of IRF135B203?

The continuous drain current is 129 A at 25 °C case temperature. This rating assumes the case is held at 25 °C; real-world current is derated based on the thermal resistance of the heatsink and ambient temperature.