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參數(shù)資料
| 型號(hào)： | N3476TD380 |
| 廠商： | WESTCODE SEMICONDUCTORS LTD |
| 元件分類(lèi)： | 晶閘管 |
| 英文描述： | 6787 A, 3800 V, SCR |
| 文件頁(yè)數(shù)： | 6/11頁(yè) |
| 文件大?。?/td> | 211K |
| 代理商： | N3476TD380 |
WESTCODE
WESTCODE An IXYS Company
Phase Control Thyristor Types N3476T#360 to N3476T#420
Data Sheet. Types N3476T#360 to N3476T#420 Issue 1
Page 4 of 11
May, 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 V0=0.97V, rs=0.180m
,
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
0.00915
0.00907
0.00898
0.00891
0.00878
0.00864
0.008
Square wave Single Side Cooled
0.01795
0.01781
0.01772
0.01759
0.01731
0.01678
0.016
Sine wave Double Side Cooled
0.00911
0.00903
0.00895
0.00884
0.00867
Sine wave Single Side Cooled
0.01784
0.01775
0.01763
0.01735
0.01682
Form Factors
Conduction Angle
30°
60°
90°
120°
180°
270°
d.c.
Square wave
3.46
2.45
2
1.73
1.41
1.15
1
Sine wave
3.98
2.78
2.22
1.88
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
1.256165
A
0.888777947
B
-0.02203001
B
0.0235943
C
0.128423x10
-3
C
0.19641x10
-3
D
1.797903x10
-3
D
-2.853666x10
-3
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| N3476TD400 | 6787 A, 4000 V, SCR |
| N3476TD420 | 6787 A, 4200 V, SCR |
| N3476TT360 | 6787 A, 3600 V, SCR |
| N3476TT370 | 6787 A, 3700 V, SCR |
| N3476TT380 | 6787 A, 3800 V, SCR |
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