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Infineon Technologies AUIRFZ48N — Discrete Semiconductors

AUIRFZ48N N-Channel MOSFET, 55V 69A, 14mOhm Rds(on), TO-220

MPNAUIRFZ48N
Active

Infineon AUIRFZ48N, N-Channel HEXFET MOSFET, 55V, 69A, 14mOhm Rds(on) at 40A, 10V, 63nC gate charge, TO-220 through-hole, -55°C to 175°C junction.

$1.39Ref. price · indicative, final on quote
Infineon Technologies AUIRFZ48N datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

AUIRFZ48N specifications
ParameterValue
SeriesHEXFET®
FET typeN-Channel
MountingThrough Hole
Operating temperature high-55°C to 175°C(TJ)
Vgs±20 V
Power160.0
Package_typeBulk
Capacitance_uf0.0019
StatusActive
Supply voltage55.0
Vgs(Th) (Max) @ id4 V @ 100µA
Switching current69.0
Rds on (Max) @ id, vgs14mOhm @ 40 A, 10 V
Gate charge (Qg) (Max) @ vgs63 nC @ 10 V

Product details

55 V, 69 A N-channel HEXFET — the bench-level view

The AUIRFZ48N is an Infineon N-channel HEXFET MOSFET in a TO-220 through-hole package, rated for 55 V drain-source and 69 A continuous drain current. Its 14 mOhm on-resistance at 40 A with 10 V gate drive makes it a solid choice for motor-drive outputs, battery-switch rails, and DC-DC converters where the junction temperature can hit 175°C.

At 40 A load, the dissipation is roughly 22 W — the TO-220 copper tab area and airflow determine whether a heatsink is needed. Gate charge is 63 nC at 10 V. The ±20 V Vgs max gives margin for gate-drive overshoot.

Through-hole TO-220 package — the tab is the drain.

Frequently asked questions

Can AUIRFZ48N replace IRFZ48N?

The AUIRFZ48N is the automotive-qualified version of the standard IRFZ48N, sharing the same TO-220 footprint and similar 55 V / 69 A ratings. Pin-compatible in most designs, but confirm the gate threshold and switching characteristics against your specific circuit — the AUIRFZ48N is rated for 175°C junction temperature versus the commercial-grade IRFZ48N's 175°C (same), so the thermal headroom is equivalent.

What is the gate charge of AUIRFZ48N?

Total gate charge is 63 nC at Vgs = 10 V. This determines the average drive current needed for a given switching frequency — at 100 kHz, expect roughly 6.3 mA average from the gate driver.