IRFR/U2905Z

www.irf.com

5

Fig 11. Maximum Effective Transient Thermal Impedance, Junction-to-Case

Fig 9. Maximum Drain Current Vs.

Case Temperature

Fig 10. Normalized On-Resistance

Vs. Temperature

25

50

75

100

125

150

175

TC , Case Temperature (°C)

0

10

20

30

40

50

60

70

LIMITED BY PACKAGE

-60 -40 -20

0

20 40 60 80 100 120 140 160 180

TJ , Junction Temperature (°C)

0.5

1.0

1.5

2.0

ID = 36A

VGS = 10V

1E-006

1E-005

0.0001

0.001

0.01

0.1

t1 , Rectangular Pulse Duration (sec)

0.001

0.01

0.1

1

10

0.20

0.10

D = 0.50

0.02

0.01

0.05

SINGLE PULSE

( THERMAL RESPONSE )

Notes:

1. Duty Factor D = t1/t2

2. Peak Tj = P dm x Zthjc + Tc

Ri (°C/W)

τi (sec)

0.3962

0.00012

0.5693

0.00045

0.4129

0.0015

τ

J

τ

J

τ

1

τ

1

τ

2

τ

2

τ

3

τ

3

R

1

R

1

R

2

R

2

R

3

R

3

τ

τ

C

Ci

i

/Ri

Ci=

τi/Ri