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Infineon Technologies IRLB8721PBF — Discrete Semiconductors

IRLB8721PBF HEXFET N-Channel MOSFET, 30V 62A TO-220AB

MPNIRLB8721PBF
Active

Infineon HEXFET series, IRLB8721PBF, N-Channel MOSFET, 30 V drain-source, 62 A continuous drain, 8.7 mOhm Rds(on) at 10 V, logic-level gate, TO-220AB through-hole package, -55°C to 175°C junction temperature.

$1.0500Ref. price · indicative, final on quote
Infineon Technologies IRLB8721PBF datasheet (PDF)
PackagingTO-220-3
RoHSROHS3 Compliant
SeriesHEXFET®
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

IRLB8721PBF specifications
ParameterValue
SeriesHEXFET®
FET typeN-Channel
MountingThrough Hole
Drain to source voltage30 V
Drive voltage (Max rds on, min rds on)4.5V, 10V
Current - continuous drain (Id) @ 25°C62A (Tc)
Power dissipation65W (Tc)
Operating temperature-55°C ~ 175°C (TJ)
PackageTube
Vgs±20V
TechnologyMOSFET (Metal Oxide)
CaseTO-220-3
Vgs(th) (Max) @ id2.35V @ 25µA
Rds on (Max) @ id, vgs8.7mOhm @ 31A, 10V
Gate charge (Qg) (Max) @ vgs13 nC @ 4.5 V
Input capacitance (Ciss) (Max) @ vds1077 pF @ 15 V

Product details

8.7 mOhm at 10 V — the conduction loss floor

The IRLB8721PBF is an Infineon HEXFET N-channel MOSFET rated for 30 V drain-source and 62 A continuous drain current at case temperature.

The maximum gate threshold voltage is 2.35 V at 25 µA drain current, and the drive voltage range for rated Rds(on) is 4.5 V to 10 V.

175°C junction rating — thermal headroom for tight enclosures

Power dissipation is rated at 65 W at case temperature.

TO-220AB through-hole — mounting and thermal interface

The IRLB8721PBF comes in a TO-220AB through-hole package. The through-hole format allows hand-rework and is preferred in point-of-load regulators where the PCB is single-sided or the assembly line does not run reflow.

Frequently asked questions

What is the Rds(on) of IRLB8721PBF at Vgs=10V?

This is the figure to use for worst-case conduction loss calculations in a switching regulator or load-switch application.

Is IRLB8721PBF a logic-level gate FET?

Yes. The maximum gate threshold voltage is 2.35 V at 25 µA, and the Rds(on) is specified with a 4.5 V drive as well as 10 V.

Can I use IRLB8721PBF for motor control?

Yes, the 30 V drain rating and 62 A continuous current capability suit low-voltage DC motor drives, provided the switching frequency is kept moderate (below ~50 kHz) to stay within the gate-drive capability of a logic output. The 175°C junction rating gives thermal margin for stalled-rotor conditions.