參數(shù)資料
型號(hào)： N3022ZD180
廠(chǎng)商： WESTCODE SEMICONDUCTORS LTD
元件分類(lèi)： 晶閘管
英文描述： 5964 A, 1800 V, SCR
文件頁(yè)數(shù)： 7/11頁(yè)
文件大小： 275K
代理商： N3022ZD180
WESTCODE An IXYS Company
Phase Control Thyristor Types N3022Z#140 to N3022Z#220
Data Sheet. Types N3022Z#140 to N3022Z#220 Issue 1.
Page 5 of 11
March, 2004
8.3 D.C. Thermal Impedance Calculation
∑
=
=
n
p
t
p
t
p
e
r
1
τ
Where p = 1 to n, n is the number of terms in the series and:
t = Duration of heating pulse in seconds.
r
t = 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. Double Side Cooled
Term
123
4
rp
6.72×10
-3
2.78×10
-3
9.476×10
-4
7.12×10
-4
τp
1.0226
0.226
0.0586
9.06×10
-3
D.C. Single Side Cooled
Term
123
4
rp
0.01688
4.42×10
-3
1.79×10
-3
8.72×10
-4
τp
7.055
0.5206
0.1198
0.0128
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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