Datasheet
25F(R) Series
5
Bulletin I2018 rev. B 09/98
www.irf.com
Fig. 3 - Forward Power Loss Characteristics
0 25 50 75 100 125 150 175
Maximum Allowable Ambient Temperature (°C)
R
=
1
K
/
W
-
D
e
l
t
a
R
t
h
S
A
2
K
/
W
3
K
/
W
4
K
/
W
6
K
/
W
8
K
/
W
1
2
K
/
W
2
0
K
/
W
4
0
K
/
W
0
5
10
15
20
25
30
35
0 5 10 15 20 25 30
Average Forward Current (A)
RMS Limit
Maximum Average Forward Power Loss (W)
Conduction Angle
180°
120°
90°
60°
30°
25F(R) Series
T = 175°C
J
Fig. 4 - Forward Power Loss Characteristics
0 2 5 5 0 7 5 10 0 12 5 1 50 1 75
Maximum Allowable Ambient Temperature (°C)
R
=
1
K
/
W
-
D
e
l
t
a
R
2
K
/
W
3
K
/
W
4
K
/
W
6
K
/
W
1
2
K
/
W
8
K
/
W
2
0
K
/
W
4
0
K
/
W
t
h
S
A
0
5
10
15
20
25
30
35
40
45
0 5 10 15 20 25 30 35 40
DC
180°
120°
90°
60°
30°
Average Forward Current (A)
RMS Limit
Maximum Average Forward Power Loss (W)
Conduction Period
25F(R) Series
T = 175°C
J
Fig. 5 - Maximum Non-Repetitive Surge Current Fig. 6 - Maximum Non-Repetitive Surge Current
50
100
150
200
250
300
350
110100
Peak Half Sine Wave Forward Current (A)
Number Of Equal Amplitude Half Cycle Current Pulses (N)
Initial T = 175°C
@ 60 Hz 0.0083 s
@ 50 Hz 0.0100 s
At Any Rated Load Condition And With
Rated V Applied Following Surge.
RRM
J
25F(R) Series
0
50
100
150
200
250
300
350
400
0.01 0.1 1 1
0
Peak Half Sine Wave Forward Current (A)
Pulse Train Duration (s)
Maximum Non Repetitive Surge Current
Initial T = 175°C
No Voltage Reapplied
Rated V Reapplied
Versus Pulse Train Duration.
J
RRM
25F(R) Series