n0255wc120 westcode, n0255wc120 Datasheet - Page 4

• Manufacturer Part Number: n0255wc120
• Description: Phase Control Thyristor
• Manufacturer: westcode

Term
Term
WESTCODE
The on-state characteristic I
(i)
(ii)
The constants, derived by curve fitting software, are given below for both hot and cold characteristics. The
resulting values for V
that plotted.
Where p = 1 to n, n is the number of terms in the series and:
8.0 Reverse recovery ratings
(i) Q
(ii) Q
(iii)
Data Sheet. Types N0255WC120 to N0255WC160 Issue 1.
r
r
p
p
p
p
7.2 Calculating V
7.3 D.C. Thermal Impedance Calculation
rr
ra
t = Duration of heating pulse in seconds.
r
r
t
p
p
is based on a 150 s integration time.
is based on 50% I
= Thermal resistance at time t.
= Amplitude of p
= Time Constant of r
the well established V
a set of constants A, B, C, D, forming the coefficients of the representative equation for V
terms of I
Positive development in power electronics
i.e.
0.1966010
2.808245
0.06851699
T
0.2938852
1
given below:
T
T
C
D
A
B
1
using ABCD Coefficients
agree with the true device characteristic over a current range, which is limited to
V
rm
Q
th
K
T
25°C Coefficients
term.
chord as shown in Fig. 1.
rr
T
Factor
th
vs. V
0
term.
and r
9.70397×10
A
-2.12×10
150
T
1.5×10
, on page 5 is represented in two ways;
0
s
i
tangent used for rating purposes and
1
s
rr
r
0.05600136
B
0.2099146
t
D.C. Double Side Cooled
.
D.C. Single Side Cooled
dt
-3
-13
-13
t
t
ln
2
1
2
p
p
n
1
I
r
Page 4 of10
T
p
0.054884818
0.08462396
C
D
A
B
1
C
2
125°C Coefficients
e
I
1.407181×10
T
p
t
0.04252801
0.05054675
0.03353607
-0.163894
1.363425
D
3
-3
I
T
N0255WC120 to N0255WC160
Fig. 1
5.255560×10
9.34826×10
2.683698×10
1.59759×10
3
4
-3
October, 2001
-3
-3
-3
T
in