IRK.56, .71 Series
7
Bulletin I27140 rev. E 10/02
www.irf.com
Fig. 10 - Current Ratings Characteristics Fig. 11 - Current Ratings Characteristics
Fig. 12 - Forward Power Loss Characteristics
Fig. 13 - Forward Power Loss Characteristics
Fig. 14 - Maximum Non-Repetitive Surge Current Fig. 15 - Maximum Non-Repetitive Surge Current
90
100
110
120
130
140
150
0 102030405060708090
30°
60°
90°
120°
180°
Maximum Allowable Case Temperature (°C)
Conduction Angle
Average Forward Current (A)
IRK.71.. Series
R (DC) = 0.4 K/W
thJC
90
100
110
120
130
140
150
0 20 40 60 80 100 120 140
DC
30°
60°
90°
120°
180°
Maximum Allowable Case Temperature (°C)
Conduction Period
Average Forward Current (A)
IRK.71.. Series
R (DC) = 0.4 K/W
thJC
0
20
40
60
80
100
120
0 1020304050607080
RMS Limit
180°
120°
90°
60°
30°
Conduction Angle
Maximum Average Forward Power Loss (W)
Average Forward Current (A)
IRK.71.. Series
Per Junction
T = 150°C
J
0
20
40
60
80
100
120
140
160
0 20 40 60 80 100 120 140
DC
180°
120°
90°
60°
30°
RMS Limit
Conduction Period
Average Forward Current (A)
Maximum Average Forward Power Loss (W)
IRK.71.. Series
Per Junction
T = 150°C
J
400
600
800
1000
1200
1400
1600
110100
Number Of Equal Amplitude Half Cycle Current Pulses (N)
Peak Half Sine Wave Forward Current (A)
Initial T = 150°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.71.. Series
Per Junction
400
600
800
1000
1200
1400
1600
1800
0.01 0.1 1
Pulse Train Duration (s)
Maximum Non Repetitive Surge Current
Peak Half Sine Wave Forward Current (A)
Initial T = 150°C
No Voltage Reapplied
Rated V Reapplied
J
RRM
Versus Pulse Train Duration.
IRK.71.. Series
Per Junction