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参数资料
| 型号： | MCA500-14IO1 |
| 厂商： | IXYS CORP |
| 元件分类： | 晶闸管 |
| 中文描述： | 1294 A, 1400 V, SCR |
| 封装： | MODULE-7 |
| 文件页数： | 7/11页 |
| 文件大小： | 447K |
| 代理商： | MCA500-14IO1 |
IXYS
Thyristor/Diode Module Types M##500-12io1 and M##500-18io1
Rating Report. Types M##500-12io1 and M##500-18io1 Issue 2
Page 5 of 11
March, 2005
8.3 D.C. Thermal Impedance Calculation
∑
=
=
n
p
t
p
t
p
e
r
1
τ
Where p = 1 to n
n =
number of terms in the series and
t
= Duration of heating pulse in seconds.
rt
= Thermal resistance at time t.
rp
= Amplitude of pth term.
τp
= Time Constant of rth term).
The coefficients for this device are shown in the tables below:
D.C.
Term
1
234
rp
0.05428
4.4894×10
-3
2.3382×10
-3
8.759×10
-4
τp
2.69428
0.126017
0.013878
1.435×10
-3
9.0 Reverse recovery ratings
(i) Qra is based on 50% IRM chord as shown in Fig. 1
Fig. 1
(ii) Qrr is based on a 150 s integration time i.e.
∫
=
s
rr
dt
i
Q
150
0
.
(iii)
2
1
t
Factor
K
=
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