n0255wc120 westcode, n0255wc120 Datasheet - Page 3

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

Square wave Double Side Cooled
Square wave Single Side Cooled
Sine wave Double Side Cooled
Sine wave Single Side Cooled
WESTCODE
Notes on Ratings and Characteristics
1.0 Voltage Grade Table
2.0 Extension of Voltage Grades
This report is applicable to other and higher voltage grades when supply has been agreed by
Sales/Production.
3.0 De-rating Factor
A blocking voltage de-rating factor of 0.13%/°C is applicable to this device for T
4.0 Repetitive dv/dt
Standard dv/dt is 1000V/µs.
5.0 Rate of rise of on-state current
The maximum un-primed rate of rise of on-state current must not exceed 1000A/µs at any time during
turn-on on a non-repetitive basis. For repetitive performance, the on-state rate of rise of current must not
exceed 500A/µs at any time during turn-on. Note that these values of rate of rise of current apply to the
total device current including that from any local snubber network.
6.0 Gate Drive
The recommended pulse gate drive is 30V, 30
0.5µs. This gate drive must be applied when using the full di/dt capability of the device.
The pulse duration may need to be configured according to the application but should be no shorter than
20µs, otherwise an increase in pulse current may be needed to supply the necessary charge to trigger.
7.0 Computer Modelling Parameters
Where V
R
ff
Data Sheet. Types N0255WC120 to N0255WC160 Issue 1.
I
th
AV
= Form factor, see table below.
7.1 Device Dissipation Calculations
= Supplementary thermal impedance, see table below.
Voltage Grade
Conduction Angle
Conduction Angle
Square wave
0
=1.57V, r
Sine wave
12
14
16
V
Positive development in power electronics
0
s
=2.29m
V
0
2
2
ff
4
2
V
DRM
ff
r
Supplementary Thermal Impedance
s
0.1588
0.3272
0.3191
2
0.163
1200
1400
1600
3.46
3.98
V
30°
30°
DSM
V
r
s
V
RRM
W
Form Factors
0.3194
0.1527
0.3113
0.158
AV
2.45
2.78
60°
60°
Page 3 of10
with a short-circuit current rise time of not more than
and:
0.1537
0.3144
0.1487
0.3076
2.22
90°
90°
2
1300
1500
1700
V
W
RSM
V
T
0.1501
0.1452
0.3051
AV
0.311
120°
120°
1.73
1.88
T
R
j
max
T
th
j
0.1442
0.3064
0.1367
0.2995
below 25°C.
180°
180°
1.41
1.57
N0255WC120 to N0255WC160
T
Hs
0.1376
0.3016
V
270°
270°
DC V
1.15
1040
810
930
D
V
R
October, 2001
0.135
d.c.
d.c.
0.3
1