R0990LS06C
| Model | R0990LS06C |
| Description | Silicon Controlled Rectifier, 2001A I(T)RMS, 600V V(DRM), 600V V(RRM), 1 Element, 101A336, 3 PIN |
| PDF file | Total 12 pages (File size: 254K) |
| Chip Manufacturer | IXYS |
WESTCODE
Positive development in power electronics
14.0 Computer Modelling Parameters
14.1 Calculating V
T
using ABCD Coefficients
R0990LS06 to R0990LS08
The on-state characteristic I
T
vs. V
T
, on page 7 is represented in two ways;
(i)
the well established V
0
and r
s
tangent used for rating purposes and
(ii)
a set of constants A, B, C, D, forming the coefficients of the representative equation for V
T
in
terms of I
T
given below:
V
T
=
A
+
B
⋅
ln
(
I
T
)
+
C
⋅
I
T
+
D
⋅
I
T
The constants, derived by curve fitting software, are given in this report for hot and cold characteristics
where possible. The resulting values for V
T
agree with the true device characteristic over a current range,
which is limited to that plotted.
125°C Coefficients
A
B
C
D
14.2 D.C. Thermal Impedance Calculation
−
t
τ
r
t
=
∑
r
p
⋅
1
−
e
p
p
=
1
p
=
n
3.0403257
-0.4165914
-3.5756×10
-5
0.04991413
Where
p = 1
to
n, n
is the number of terms in the series.
t
r
t
r
p
τ
p
=
=
=
=
Duration of heating pulse in seconds.
Thermal resistance at time t.
Amplitude of p
th
term.
Time Constant of r
th
term.
D.C. Double Side Cooled
Term
1
0.01771901
0.7085781
2
4.240625×10
0.1435833
D.C. Single Side Cooled
Term
1
0.03947164
4.090062
2
0.01022837
1.078983
3
8.789912×10
0.08530917
-3
-3
3
6.963806×10
0.03615196
-3
4
3.043661×10
2.130842×10
-3
-3
r
p
τ
p
4
4.235162×10
0.01128791
-3
5
1.907609×10
1.240861×10
-3
-3
r
p
τ
p
Data Sheet. Types R0990LS06x to R0990LS08x Issue 1
Page 6 of 12
April, 2001
