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Date:- 6 Feb, 2001
Data Sheet Issue: 1
Phase Control Thyristor
Types N0676YS120 to N0676YS180
Absolute Maximum Ratings
VDRM
VDSM
VRRM
VRSM
VOLTAGE RATINGS
Repetitive peak off-state voltage, (note 1)
Non-repetitive peak off-state voltage, (note 1)
Repetitive peak reverse voltage, (note 1)
Non-repetitive peak reverse voltage, (note 1)
MAXIMUM
LIMITS
1200-1800
1200-1800
1200-1800
1300-1900
UNITS
V
V
V
V
IT(AV)
IT(AV)
IT(AV)
IT(RMS)
IT(d.c.)
ITSM
ITSM2
I2t
I2t
diT/dt
VRGM
PG(AV)
PGM
VGD
THS
Tstg
OTHER RATINGS
Mean on-state current, Tsink=55°C, (note 2)
Mean on-state current. Tsink=85°C, (note 2)
Mean on-state current. Tsink=85°C, (note 3)
Nominal RMS on-state current, 25°C, (note 2)
D.C. on-state current, 25°C, (note 4)
Peak non-repetitive surge tp=10ms, VRM=0.6VRRM, (note 5)
Peak non-repetitive surge tp=10ms, VRM10V, (note 5)
I2t capacity for fusing tp=10ms, VRM=0.6VRRM, (note 5)
I2t capacity for fusing tp=10ms, VRM10V, (note 5)
Maximum rate of rise of on-state current (repetitive), (Note 6)
Maximum rate of rise of on-state current (non-repetitive), (Note 6)
Peak reverse gate voltage
Mean forward gate power
Peak forward gate power
Non-trigger gate voltage, (Note 7)
Operating temperature range
Storage temperature range
Notes:-
1) De-rating factor of 0.13% per °C is applicable for Tj below 25°C.
2) Double side cooled, single phase; 50Hz, 180° half-sinewave.
3) Single side cooled, single phase; 50Hz, 180° half-sinewave.
4) Double side cooled.
5) Half-sinewave, 125°C Tj initial.
6) VD=67% VDRM, ITM=1000A, IFG=2A, tr0.5µs, Tcase=125°C.
7) Rated VDRM.
MAXIMUM
LIMITS
676
456
270
1346
1138
7500
8300
281×103
345×103
500
1000
5
2
30
0.25
-40 to +125
-40 to +150
UNITS
A
A
A
A
A
A
A
A2s
A2s
A/µs
A/µs
V
W
W
V
°C
°C
Data Sheet Issue 1. Types N0676YS120 to N0676YS180
Page 1 of 9
February, 2001

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Characteristics
N0676YS120 to N0676YS180
PARAMETER
MIN.
VTM Maximum peak on-state voltage
V0 Threshold voltage
rS Slope resistance
dv/dt
Critical rate of rise of off-state
voltage
IDRM Peak off-state current
IRRM Peak reverse current
VGT Gate trigger voltage
IGT Gate trigger current
IH Holding current
Rθ
Thermal resistance, junction to
heatsink
F Mounting force
Wt Weight
-
-
-
1000
-
-
-
-
-
-
-
5.3
-
TYP. MAX. TEST CONDITIONS (Note 1)
- 2.0 ITM=1550A
- 1.09
- 0.587
- - VD=80% VDRM
- 40 Rated VDRM
- 40 Rated VRRM
- 3.0 Tj=25°C
- 150 Tj=25°C.
- 500 Tj=25°C
VD=10V, IT=3A
- 0.05 Double side cooled
- 0.1 Single side cooled
- 10
90 -
Notes:-
1) Unless otherwise indicated Tj=125°C.
UNITS
V
V
m
V/µs
mA
mA
V
mA
mA
K/W
K/W
kN
g
Data Sheet Issue 1. Types N0676YS120 to N0676YS180
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February, 2001

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Notes on Ratings and Characteristics
1.0 Voltage Grade Table
N0676YS120 to N0676YS180
Voltage Grade 'H'
12
14
16
18
VDRM VDSM VRRM
V
1200
1400
1600
1800
VRSM
V
1400
1500
1700
1900
VD VR
DC V
810
930
1040
1150
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 Tj below 25oC.
4.0 Repetitive dv/dt
Standard dv/dt is 1000V/µs.
5.0 Computer Modelling Parameters
5.1 Device Dissipation Calculations
I AV = − V0 +
V0 2 + 4 ff 2 rs WAV
2 ff 2 rs
and:
WAV
=
T
Rth
T = Tj max THs
Where V0=1.09V,rs=0.587mΩ,
Rth = Supplementary thermal impedance, see table below.
ff = Form factor, see table below.
Conduction Angle
Square wave Double Side Cooled
Square wave Single Side Cooled
Sine wave Double Side Cooled
Sine wave Single Side Cooled
Supplementary Thermal Impedance
30° 60° 90° 120°
0.071
0.12
0.053
0.103
0.069
0.119
0.052
0.102
0.065
0.115
0.0516
0.1017
0.061
0.111
0.0513
0.1013
180°
0.057
0.107
0.0505
0.1005
270°
0.053
0.103
Conduction Angle
Square wave
Sine wave
Form Factors
30°
60°
90°
120°
180°
270°
3.46 2.45 2 1.73 1.41 1.15
3.98 2.78 2.22 1.88 1.57
d.c.
0.05
0.1
d.c.
1
Data Sheet Issue 1. Types N0676YS120 to N0676YS180
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February, 2001

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N0676YS120 to N0676YS180
5.2 Calculating VT using ABCD Coefficients
The on-state characteristic IT vs. VT, on page 7 is represented in two ways;
(i) the well established Vo and rs 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:
VT = A + B ln(IT )+ C IT + D IT
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 1.175567 A
B -0.0883931 B
C 2.17593×10-4 C
D 0.02521394 D
1.0538816
-0.1096815
2.5239×10-4
0.03456018
5.3 D.C. Thermal Impedance Calculation
rt
=
p=n
rp
p =1
1
t
eτ p


Where p = 1 to n, n is the number of terms in the series and:
t = Duration of heating pulse in seconds.
r
t
=
Thermal resistance at time t.
rp = Amplitude of pth term.
τp = Time Constant of rth term.
Term
rp
τp
1
0.12000552
0.3391689
D.C. Double Side Cooled
2
0.01609235
3
8.812673×10-3
0.09405764
0.12195269
4
3.659765×10-3
2.196197×10-3
Term
rp
τp
1
0.06157697
2.136132
D.C. Single Side Cooled
2
8.431182×10-3
3
0.01031315
1.212898
0.1512408
4
0.01613806
0.04244
5
5.181088×10-3
2.889595×10-3
Data Sheet Issue 1. Types N0676YS120 to N0676YS180
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February, 2001

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Curves
Figure 1 - On-state current vs. Power dissipation –
Double Side Cooled (Sine wave)
2500
N0676YS120 to N0676YS180
Figure 2 - On-state current vs. Heatsink temperature
- Double Side Cooled (Sine wave)
140
N0676YS120-180
Issue 1
2000
30° 60° 90° 120° 180°
120
100
1500
80
1000
60
500
N0676YS120-180
Issue 1
0
0 200 400 600 800 1000
Mean forward current (A) (Whole cycle averaged)
40
30° 60° 90° 120° 180°
20
0
0 200 400 600 800 1000
Mean forward current (A) (Whole cycle averaged)
Figure 3 - On-state current vs. Power dissipation –
Double Side Cooled (Square wave)
2500
Figure 4 - On-state current vs. Heatsink temperature
- Double Side Cooled (Square wave)
140
N0676YS120-180
Issue 1
2000
1500
d.c.
270°
180°
120°
90°
60°
30°
120
100
80
1000
60
500
N0676YS120-180
Issue 1
0
0 200 400 600 800 1000 1200
Mean Forward Current (Amps) (Whole Cycle Averaged)
40
20 30° 60° 90° 120° 180° 270° d.c.
0
0 200 400 600 800 1000 1200
Mean Forward Current (Amps) (Whole Cycle Averaged)
Data Sheet Issue 1. Types N0676YS120 to N0676YS180
Page 5 of 9
February, 2001