IRK.91 Series
5
Bulletin I27141 rev. F 10/02
www.irf.com
Fig. 1 - Current Ratings Characteristics Fig. 2 - Current Ratings Characteristics
Fig. 4 - Forward Power Loss CharacteristicsFig. 3 - Forward Power Loss Characteristics
Fig. 5 - Maximum Non-Repetitive Surge Current Fig. 6 - Maximum Non-Repetitive Surge Current
90
100
110
120
130
140
150
0 20 40 60 80 100 120
30°
60°
90°
120°
180°
Maximum Allowable Case Temperature (°C)
Conduction Angle
Average Forward Current (A)
IRK.91.. Series
R (DC) = 0.35 K/W
thJC
90
100
110
120
130
140
150
0 20 40 60 80 100 120 140 160
DC
30°
60°
90°
120°
180°
Maximum Allowable Case Temperature (°C)
Conduction Period
Average Forward Current (A)
IRK.91.. Series
R (DC) = 0.35 K/W
thJC
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°
RMS Limit
Conduction Period
Average Forward Current (A)
Maximum Average Forward Power Loss (W)
IRK.91.. Series
Per Junction
T = 150°C
J
0
20
40
60
80
100
120
140
020406080100
RMS Limit
180°
120°
90°
60°
30°
Conduction Angle
Maximum Average Forward Power Loss (W)
Average Forward Current (A)
IRK.91.. Series
Per Junction
T = 150°C
J
400
600
800
1000
1200
1400
1600
1800
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.91.. Series
Per Junction
400
600
800
1000
1200
1400
1600
1800
2000
0.01 0.1 1
Pulse Train Duration (s)
Peak Half Sine Wave Forward Current (A)
Initial T = 150°C
No Voltage Reapplied
Rated V Reapplied
J
RRM
Versus Pulse Train Duration.
Maximum Non Repetitive Surge Current
IRK.91.. Series
Per Junction