
IRK.56, .71 Series
9
Bulletin I27140 rev. B 09/97
www.irf.com
Fig. 21 - Thermal Impedance Z
thJC
Characteristic
Fig. 20 - Forward Voltage Drop Characteristics
Fig. 19 - Forward Voltage Drop Characteristics
10
100
1000
0
0.5
1
1.5
2
2.5
3
3.5
T = 25
°C
T = 150°C
I
Insta ntaneous Forward Voltage (V)
IRK.71.. Series
Per J unc tion
0.01
0.1
1
0.001
0.01
0.1
1
10
Square Wave Pulse Duration (s)
t
T
Per Junc tion
Steady State Value:
R = 0.5 K/W
R = 0.4 K/W
(DC Operation)
IRK.56.. Series
IRK.71.. Series
10
100
1000
0.5
1
1.5
2
2.5
3
3.5
T = 25
°C
I
Instantaneous Forward Voltag e (V)
T = 150°C
IRK.56.. Se ries
Per Junc tion