Datasheet
IRGS/SL/B/P4640D/EPbF
9 www.irf.com © 2015 International Rectifier Submit Datasheet Feedback January 20, 2015
Fig. 27 - Maximum Transient Thermal Impedance, Junction-to-Case (IGBT-TO-220Pak)
Fig. 28 - Maximum Transient Thermal Impedance, Junction-to-Case (DIODE-TO-220Pak)
1E-006 1E-005 0.0001 0.001 0.01 0.1
t
1
, Rectangular Pulse Duration (sec)
0.0001
0.001
0.01
0.1
1
T
h
e
r
ma
l
R
e
s
p
o
n
s
e
(
Z
t
h
J
C
)
0.20
0.10
D = 0.50
0.02
0.01
0.05
SINGLE PULSE
( THERMAL RESPONSE )
Notes:
1. Duty Factor D = t1/t2
2. Peak Tj = P dm x Zthjc + Tc
τ
J
τ
J
τ
1
τ
1
τ
2
τ
2
R
1
R
1
R
2
R
2
τ
C
τ
C
Ci= τi/Ri
Ci= τi/Ri
Ri (°C/W)
τi (sec)
0.2329 0.000234
0.3631 0.007009
1E-006 1E-005 0.0001 0.001 0.01 0.1 1
t
1
, Rectangular Pulse Duration (sec)
0.0001
0.001
0.01
0.1
1
10
T
h
e
r
ma
l
R
e
s
p
o
n
s
e
(
Z
t
h
J
C
)
0.20
0.10
D = 0.50
0.02
0.01
0.05
SINGLE PULSE
( THERMAL RESPONSE )
Notes:
1. Duty Factor D = t1/t2
2. Peak Tj = P dm x Zthjc + Tc
τ
J
τ
J
τ
1
τ
1
τ
2
τ
2
τ
3
τ
3
R
1
R
1
R
2
R
2
R
3
R
3
τ
C
τ
C
Ci= τi/Ri
Ci= τi/Ri
Ri (°C/W)
τi (sec)
0.476 0.000763
0.647 0.003028
0.406 0.023686