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參數(shù)資料
| 型號： | M1104NC440 |
| 廠商： | WESTCODE SEMICONDUCTORS LTD |
| 元件分類： | 整流器 |
| 英文描述： | 1104 A, 4400 V, SILICON, RECTIFIER DIODE |
| 文件頁數(shù)： | 7/11頁 |
| 文件大小： | 215K |
| 代理商： | M1104NC440 |
WESTCODE
Positive development in power electronics
M1104NC400 to M1104NC450
Data Sheet. Types M1104NC400 to M1104NC450 Issue 1
Page 5 of 11
November, 2001
6.0 Computer Modelling Parameters
6.1 Device Dissipation Calculations
s
AV
s
o
AV
r
ff
W
r
ff
V
I
+
=
2
4
Where Vo = 1.37 V, rs = 0.553m
ff = form factor (normally unity for fast diode applications)
Hs
MAX
j
th
AV
T
R
T
W
=
=
)
(
6.2 Calculation of VF using ABCD Coefficients
The forward characteristic IF Vs VF, on Fig. 1 is represented in two ways;
(i)
the well established V0 and rs tangent used for rating purposes and
((iiii))
a set of constants A, B, C, and D forming the coefficients of the representative equation for VF in
terms of IF given below:
F
I
D
I
C
I
B
A
V
+
+
+
=
)
ln(
The constants, derived by curve fitting software, are given in this report for hot characteristics. The
resulting values for VF agree with the true device characteristic over a current range, which is limited to
that plotted.
125°C Coefficients
A
0.655103028
B
0.05722978
C
4.08311×10
-4
D
0.01326875
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