參數(shù)資料
型號(hào)： R295CH38C2H9
廠商： WESTCODE SEMICONDUCTORS LTD
元件分類(lèi)： 晶閘管
英文描述： 1755 A, 3800 V, SCR
封裝： 101A223, 3 PIN
文件頁(yè)數(shù)： 14/15頁(yè)
文件大?。?/td> 297K
代理商： R295CH38C2H9
WESTCODE
Positive development in power electronics
R295CH36 to R295CH40
Provisional Data Sheet. Types R295CH36 to R295CH40 Issue 1
Page 6 of 13
August, 2000
14.0 Computer Modelling Parameters
14.1 Calculating VT using ABCD Coefficients
The on-state characteristic IT vs VT, on page 8 is represented in two ways;
(i)
the well established Vo and rs tangent used for rating purposes and
(ii)
a set of constants A, B, C, D, forming the coefficients of the representative equation for VT in
terms of IT given below:
()
T
I
D
I
C
I
B
A
V
+
+
+
=
ln
The constants, derived by curve fitting software, are given in this report for hot and cold characteristics
where possible. The resulting values for VT agree with the true device characteristic over a current range,
which is limited to that plotted.
25°C Coefficients
125°C Coefficients
A
0.78163983
A
0.66032723
B
0.4140327
B
0.169496
C
1.11101×10
-3
C
8.46556×10
-4
D
-0.0744794
D
-0.01175336
14.2 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.
t = Duration of heating pulse in seconds.
rt = Thermal resistance at time t.
rp = Amplitude of pth term.
τ
p = Time Constant of rth term.
D.C. Double Side Cooled
Term
12
34
5
rp
0.01249139
6.316833×10
-3
1.850855×10
-3
1.922045×10
-3
6.135330×10
-4
τ
p
0.8840810
0.1215195
0.03400152
6.742908×10
-3
1.326292×10
-3
D.C. Single Side Cooled
Term
123456
rp
0.02919832
4.863568×10
-3
3.744798×10
-3
6.818034×10
-3
2.183558×10
-3
1.848294×10
-3
τ
p
6.298105
3.286174
0.5359179
0.1186897
0.02404574
3.379476×10
-3
相關(guān)PDF資料
PDF描述
R295CH38CD0 1755 A, 3800 V, SCR
R295CH38CD1 1755 A, 3800 V, SCR
R295CH38CD2 1755 A, 3800 V, SCR
R295CH38CD3 1755 A, 3800 V, SCR
R295CH38CD4 1755 A, 3800 V, SCR
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