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1

05/14/09

IRFS4020PbF

IRFSL4020PbF

Notes

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Description

This Digital Audio MOSFET is specifically designed for Class-D audio amplifier applications. This MOSFET utilizes

the latest processing techniques to achieve low on-resistance per silicon area. Furthermore, Gate charge, body-diode

reverse recovery and internal Gate resistance are optimized to improve key Class-D audio amplifier performance

factors such as efficiency, THD and EMI. Additional features of this MOSFET are 175°C operating junction

temperature and repetitive avalanche capability. These features combine to make this MOSFET a highly efficient,

robust and reliable device for ClassD audio amplifier applications.

DIGITAL AUDIO MOSFET

Features

• Key parameters optimized for Class-D audio

amplifier applications

efficiency

• 175°C operating junction temperature for

ruggedness

• Can deliver up to 300W per channel into 8Ω load in

half-bridge configuration amplifier

PD - 97393

Absolute Maximum Ratings

Parameter

Units

Drain-to-Source Voltage

V

Gate-to-Source Voltage

A

Pulsed Drain Current c

Power Dissipation

f

W

Power Dissipation f

Linear Derating Factor

W/°C

Operating Junction and

Storage Temperature Range

°C

Soldering Temperature, for 10 seconds

(1.6mm from case)

Thermal Resistance

Parameter

Typ.

Max.

Units

Junction-to-Case

f

–––

1.43

°C/W

Junction-to-Ambient (PCB Mount) f

–––

40

100

52

0.70

-55 to + 175

300

Max.

13

52

±20

200

18

S

D

G

IRFS4020PbF

S

D

G

D

TO-262

IRFSL4020PbF

S

D

G

D

GD

S

Gate

Drain

Source

200

V

85

m

Ω

18

nC

6.7

nC

3.2

Ω

175

°C

Key Parameters