IRK.71, .91 Series
5
Bulletin I27132 rev. I 09/04
www.irf.com
Fig. 1 - Current Ratings Characteristics
Fig. 2 - Current Ratings Characteristics
70
80
90
100
110
120
130
0 1020304050607080
Maximum Allowable Case Temperature (°C)
30°
60°
90°
120°
180°
Average On-state Current (A)
Co nd uction Ang le
IRK.71.. Series
R (DC) = 0.33 K/ W
thJC
70
80
90
100
110
120
130
0 20 40 60 80 100 120
DC
30°
60°
90°
120°
180°
Average On-state Current (A)
Maximum Allowable Case Temperature (°C)
Conduction Period
IRK.71.. Series
R (DC) = 0.33 K/ W
thJC
Fig. 3 - On-state Power Loss Characteristics
Fig. 5 - Maximum Non-Repetitive Surge Current Fig. 6 - Maximum Non-Repetitive Surge Current
Fig. 4 - On-state Power Loss Characteristics
0
20
40
60
80
100
120
0 1020304050607080
180°
120°
90°
60°
30°
RM S Li m i t
Conduction Angle
Maximum Average On-state Power Loss (W)
Average On-state Current (A)
IRK.71.. Series
Per Ju n c t io n
T = 125°C
J
0
20
40
60
80
100
120
140
0 20 40 60 80 100 120
DC
180°
120°
90°
60°
30°
RM S Li m i t
Conduction Period
Maximum Average On-state Power Loss (W)
Average On-state Current (A)
IRK.71.. Series
Pe r Ju n c t i o n
T = 125°C
J
700
800
900
1000
1100
1200
1300
1400
1500
1600
1 10 100
Number Of Equal Amplitude Half Cycle Current Pulses (N)
Pe a k Half Sine Wave On-sta t e Cu rrent (A)
Init ia l T = 125°C
@ 60 Hz 0.0083 s
@ 50 Hz 0.0100 s
J
At Any Ra ted Load Condition And With
Rated V Applied Following Surge.
RRM
IRK.71.. Series
Per Junc tion
600
800
1000
1200
1400
1600
1800
0.01 0.1 1
Peak Half Sine Wave On-state Current (A)
Pulse Train Duration (s)
Initial T = 125°C
No Voltage Reapplied
Rated V Reapplied
Of Conduction May Not Be Maintained.
RRM
J
Maximum Non Repetitive Surge Current
Versus Pulse Train Duration. Control
IRK.71.. Series
Per Junction
