C&H Technology 20MT120UF - Manual (Page 11)

20MT120UF
I27124 rev. D 02/03
Fig 23. Maximum Transient Thermal Impedance, Junction-to-Case (IGBT)
Fig 24. Maximum Transient Thermal Impedance, Junction-to-Case (DIODE)
1E-006 1E-005 0.0001 0.001 0.01 0.1 1 10
t1 , Rectangular Pulse Duration (sec)
0.0001
0.001
0.01
0.1
1
T
herm
a
l R
es
pons
e
( Z
th
JC
)
0.20
0.10
D = 0.50
0.01
0.02
0.05
SINGLE PULSE
( THERMAL RESPONSE )
Notes:
1. Duty Factor D = t1/t2
2. Peak Tj = P dm x Zthjc + Tc
1E-006 1E-005 0.0001 0.001 0.01 0.1 1 10
t1 , Rectangular Pulse Duration (sec)
0.0001
0.001
0.01
0.1
1
The
rma
l R
e
sp
on
se
( Z
thJC
)
0.20
0.10
D = 0.50
0.01
0.02
0.05
SINGLE PULSE
( THERMAL RESPONSE )
Notes:
1. Duty Factor D = t1/t2
2. Peak Tj = P dm x Zthjc + Tc
Ri (°C/W) τi (sec)
0.161 0.000759
0.210 0.017991
0.147 0.06094
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
τ
C
Ci= i /Ri
Ci= τi/Ri
Ri (°C/W) τi (sec)
0.238 0.001017
0.312 0.033081
0.061 0.77744
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
τ
C
Ci= i /Ri
Ci= τi/Ri
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