IRK.71, .91 Series
7
Bulletin I27132 rev. I 09/04
www.irf.com
Fig. 11 - Current Ratings CharacteristicsFig. 10 - Current Ratings Characteristics
70
80
90
100
110
120
130
0 20406080100
30°
60°
90°
120°
180°
Average On-state Current (A)
Maximum Allowable Case Temperature (°C)
Cond uction Angle
IRK.91.. Series
R (DC) = 0.27 K/ W
thJC
70
80
90
100
110
120
130
0 20 40 60 80 100 120 140 160
DC
30°
60°
90°
120°
180°
Average On-state Current (A)
Maximum Allowable Case Temperature (°C)
Conduction Period
IRK.91.. Series
R (DC) = 0.27 K/ W
thJC
Fig. 14 - Maximum Non-Repetitive Surge Current Fig. 15 - Maximum Non-Repetitive Surge Current
Fig. 13 - On-state Power Loss CharacteristicsFig. 12 - On-state Power Loss Characteristics
0
20
40
60
80
100
120
140
0 20406080100
RM S Lim it
Conduc tion Angle
Maximum Average On-state Power Loss (W)
Average On-state Current (A)
180°
120°
90°
60°
30°
IRK.91.. Series
Pe r Ju n c t i o n
T = 125°C
J
0
20
40
60
80
100
120
140
160
180
0 20 40 60 80 100 120 140 160
DC
180°
120°
90°
60°
30°
RM S Li m it
Conduction Period
Maximum Average On-state Power Loss (W)
Average On-state Current (A)
IRK.91.. Serie s
Pe r Ju n c t i o n
T = 125°C
J
700
800
900
1000
1100
1200
1300
1400
1500
1600
110100
Number Of Equal Amplitude Half Cycle Current Pulses (N)
Peak Half Sine Wave On-state Current (A)
Init ial T = 125°C
@ 60 Hz 0.0083 s
@ 50 Hz 0.0100 s
J
At Any Rated Load Condition And With
Rated V Applied Following Surge.
RRM
IRK.91.. Serie s
Per Junction
600
800
1000
1200
1400
1600
1800
0.01 0.1 1
Peak Half Sine Wave On-state Current (A)
Pulse Train Duration (s)
Versus Pulse Train Duration. Control
Initial T = 125°C
No Voltage Reapplied
Rated V Reapplied
RRM
J
Of Conduction May Not Be Maintained.
Ma ximum No n Re p etitive Surg e Curre nt
IRK.91.. Series
Per Junction