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參數(shù)資料
| 型號： | N3022ZD140 |
| 廠商： | WESTCODE SEMICONDUCTORS LTD |
| 元件分類： | 晶閘管 |
| 英文描述： | 5964 A, 1400 V, SCR |
| 文件頁數(shù)： | 6/11頁 |
| 文件大?。?/td> | 275K |
| 代理商： | N3022ZD140 |
WESTCODE An IXYS Company
Phase Control Thyristor Types N3022Z#140 to N3022Z#220
Data Sheet. Types N3022Z#140 to N3022Z#220 Issue 1.
Page 4 of 11
March, 2004
8.0 Computer Modelling Parameters
8.1 Device Dissipation Calculations
T
AV
T
AV
r
ff
W
r
ff
V
I
+
=
2
0
2
4
and:
K
j
th
AV
T
R
T
W
=
=
max
Where VT0=0.977V, rT=0.151m
,
Rth = Supplementary thermal impedance, see table below and
ff = Form factor, see table below.
Supplementary Thermal Impedance
Conduction Angle
30°
60°
90°
120°
180°
270°
d.c.
Square wave Double Side Cooled
0.0124
0.0122
0.0121
0.0119
0.0117
0.0113
0.011
Square wave Single Side Cooled
0.0249
0.0248
0.0247
0.0246
0.0244
0.0241
0.022
Sine wave Double Side Cooled
0.0168
0.0140
0.0131
0.0118
0.0112
Sine wave Single Side Cooled
0.0249
0.0247
0.0246
0.0244
0.0241
Form Factors
Conduction Angle
30°
60°
90°
120°
180°
270°
d.c.
Square wave
3.464
2.449
2
1.732
1.414
1.149
1
Sine wave
3.98
2.778
2.22
1.879
1.57
8.2 Calculating VT using ABCD Coefficients
The on-state characteristic IT vs. VT, on page 6 is represented in two ways;
(i)
the well established VT0 and rT 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 below for both hot and cold characteristics. 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
1.072085
A
0.403588
B
-5.890785×10
-3
B
0.04879069
C
1.246608×10
-4
C
1.318621×10
-4
D
6.69298×10
-4
D
3.280480×10
-3
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