MCC501-12IO2 westcode, MCC501-12IO2 Datasheet - Page 5

• Manufacturer Part Number: MCC501-12IO2
• Description: Thyristor/diode Modules
• Manufacturer: westcode

8.3 D.C. Thermal Impedance Calculation
Where p = 1 to n and:
The coefficients for this device are shown in the table below:
9.0 Reverse recovery ratings
Rating Report. Types M##501-12io2 and M##501-18io2 Issue 2
IXYS
τ
r
n = number of terms in the series
r
(i) Q
(ii) Q
(iii)
t = Duration of heating pulse in seconds
p
p
t
Term
τ
r
= Thermal resistance at time t
= Amplitude of p
= Time Constant of r
p
p
rr
ra
is based on a 150 µs integration time i.e.
K
is based on 50% I
Factor
1.37×10
7.6×10
1
th
-4
term
-3
=
th
t
term
RM
t
1
2
chord as shown in Fig. 1
4.86×10
8.6×10
r
2
t
=
-3
-3
∑
p
p
=
=
n
1
Page 5 of 10
r
p
D.C.
⋅
⎛
⎜
⎜
⎝
0.0114
0.101
1
Thyristor/Diode Module Types M##501-12io2 to M##501-18io2
Q
3
−
rr
e
=
τ
−
p
t
150
⎞
⎟
⎟
⎠
∫
0
µ
i
s
rr
.
0.0223
dt
0.56
4
Fig. 1
0.0221
3.12
5
August, 2011