Document Number: 91233

www.vishay.com

S-81271-Rev. A, 16-Jun-08

5

IRFP450, SiHFP450

Vishay Siliconix

Fig. 9 - Maximum Drain Current vs. Case Temperature

Fig. 10a - Switching Time Test Circuit

Fig. 10b - Switching Time Waveforms

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

Fig. 12a - Unclamped Inductive Test Circuit

Fig. 12b - Unclamped Inductive Waveforms

Pulse width

≤ 1 µs

Duty factor

≤ 0.1 %

R

D

V

GS

R

G

D.U.T.

10 V

+

-

V

DS

V

DD

V

DS

90 %

10 %

V

GS

t

d(on)

t

r

t

d(off)

t

f

R

G

0.01

Ω

D.U.T

L

V

DS

+

-

V

DD

A

10 V