Thermal Resistance

Parameter

Min. Typ. Max. Units

Test Conditions

RthJC

Junction-to-Case

—

—

0.83

RthJ-PCB

Junction-to-PC Board

—

TBD

—

K/W

Soldered to a copper clad PC board

Source-Drain Diode Ratings and Characteristics

Parameter

Min. Typ. Max. Units

Test Conditions

IS

Continuous Source Current (Body Diode)

—

—

12

Modified MOSFET symbol showing the

ISM

Pulse Source Current (Body Diode) Œ

——

48

integral reverse p-n junction rectifier.

VSD

Diode Forward Voltage

—

—

1.7

V

trr

Reverse Recovery Time

—

—

1600

ns

Tj = 25°C, IF = 12A, di/dt ≤ 100A/µs

QRR

Reverse Recovery Charge

—

—

14

µCVDD ≤ 50V 

ton

Forward Turn-On Time

Intrinsic turn-on time is negligible. Turn-on speed is substantially controlled by LS + LD.

Parameter

Min.

Typ. Max. Units

Test Conditions

BVDSS

Drain-to-Source Breakdown Voltage

500

—

—

V

VGS = 0V, ID = 1.0mA

∆BVDSS/∆TJ Temperature Coefficient of Breakdown

—

0.78

—

V/°C

Reference to 25°C, ID = 1.0mA

Voltage

RDS(on)

Static Drain-to-Source

—

—

0.415

VGS = 10V, ID = 8A

On-State Resistance

—

—

0.515

Ω

VGS = 10V, ID = 12A

VGS(th)

Gate Threshold Voltage

2.0

—

4.0

V

VDS = VGS, ID = 250µA

gfs

Forward Transconductance

5.5

—

—

S ( )VDS > 15V, IDS = 8A 

IDSS

Zero Gate Voltage Drain Current

—

—

25

VDS = 0.8 x Max Rating,VGS = 0V

—

—

250

VDS = 0.8 x Max Rating

VGS = 0V, TJ = 125°C

IGSS

Gate-to-Source Leakage Forward

—

—

100

VGS = 20V

IGSS

Gate-to-Source Leakage Reverse

—

—

-100

VGS = -20V

Qg

Total Gate Charge

55

—

120

VGS =10V, ID = 12A

Qgs

Gate-to-Source Charge

5.0

—

19

VDS = Max. Rating x 0.5

Qgd

Gate-to-Drain (“Miller”) Charge

27

—

70

see figures 6 and 13

td(on)

Turn-On Delay Time

—

—

35

VDD = 250V, ID = 12A,

tr

Rise Time

—

—

190

RG = 2.35Ω, VGS= 10V

td(off)

Turn-Off Delay Time

—

—

170

tf

Fall Time

—

—

130

see figure 10

LD

Internal Drain Inductance

—

2.0

—

LS

Internal Source Inductance

—

6.5

—

Ciss

Input Capacitance

—

2700

—

VGS = 0V, VDS = 25V

Coss

Output Capacitance

—

600

—

f = 1.0 MHz

Crss

Reverse Transfer Capacitance

—

240

—

see figure 5

IRFN450 Device



µA

nC

pF

nH

ns

Measured from the

drain lead, 6mm (0.25

in.) from package to

center of die.

Measured from the

source lead, 6mm

(0.25 in.) from package

to source bonding pad.

Modified MOSFET

symbol showing the

internal inductances.

nA

A

Next Data Sheet

Index

Previous Datasheet

To Order