Date:- 7
th
January, 2014
Data Sheet Issue:- 1
Rectifier Diode
Types W3743Z#400 to W3743Z#500
Absolute Maximum Ratings
VOLTAGE RATINGS
V
RRM
V
RSM
Repetitive peak reverse voltage, (note 1)
Non-repetitive peak reverse voltage, (note 1)
MAXIMUM
LIMITS
4000-5000
4100-5100
UNITS
V
V
OTHER RATINGS
I
F(AV)M
I
F(AV)M
I
F(AV)M
I
F(RMS)M
I
F(d.c.)
I
FSM
I
FSM2
I
2
t
I
2
t
T
j op
T
stg
Maximum average forward current, T
sink
=55°C, (note 2)
Maximum average forward current. T
sink
=100°C, (note 2)
Maximum average forward current. T
sink
=100°C, (note 3)
Nominal RMS forward current, T
sink
=25°C, (note 2)
D.C. forward current, T
sink
=25°C, (note 4)
Peak non-repetitive surge t
p
=10ms, V
rm
=60%V
RRM
, (note 5)
Peak non-repetitive surge t
p
=10ms, V
rm
≤10V,
(note 5)
I
2
t capacity for fusing t
p
=10ms, V
rm
=60%V
RRM
, (note 5)
I
2
t capacity for fusing t
p
=10ms, V
rm
≤10V,
(note 5)
Operating temperature range
Storage temperature range
MAXIMUM
LIMITS
3750
2625
1640
6860
6100
35
39
6.13 x 10
6
7.61 x 10
6
UNITS
A
A
A
A
A
kA
kA
A
2
s
A
2
s
°C
°C
-55 to +160
-55 to +160
Notes:-
1)
De-rating factor of 0.13% per °C is applicable for T
j
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, 160°C T
j
initial.
Data Sheet. Types W3743Z#400 to W3743Z#500 Issue 1
Page 1 of 9
January, 2014
Rectifier Diode Types W3743Z#400 to W3743Z#500
Characteristics
PARAMETER
V
FM
V
FM
V
T0
r
T
I
RRM
Q
rr
Q
ra
I
rm
t
rr
R
thJK
F
W
t
Maximum peak forward voltage
Maximum peak forward voltage
Threshold voltage
Slope resistance
Peak reverse current
Recovered charge
Recovered charge, 50% Chord
Reverse recovery current
Reverse recovery time, 50% chord
Thermal resistance, junction to heatsink
Mounting force
Weight
MIN.
-
-
-
-
-
-
-
-
-
-
-
27
-
-
TYP.
-
-
-
-
-
12000
7150
263
55
-
-
-
1.7
1.2
MAX. TEST CONDITIONS
(Note 1)
2.00
2.90
0.976
0.170
200
13000
-
-
-
0.011
0.022
47
-
-
Double side cooled
Single side cooled
Note 2
Outline option ZC, ZT and ZY
Outline Option ZD and ZV
I
TM
=2000A, t
p
=1000µs, di/dt=10A/µs,
V
r
=100V
Rated V
RRM
I
FM
=6000A
I
FM
=11250A
Valid from 5000A to 15000A
UNITS
V
V
V
mΩ
mA
µC
µC
A
µs
K/W
K/W
kN
Kg
Notes:-
1)
Unless otherwise indicated T
j
=160
°
C.
2)
For other clamp forces, please consult factory.
Notes on rupture rated packages.
This product is available with a non-rupture rated package.
For additional details on these products, please consult factory.
Data Sheet. Types W3743Z#400 to W3743Z#500 Issue 1
Page 2 of 9
January, 2014
Rectifier Diode Types W3743Z#400 to W3743Z#500
Notes on Ratings and Characteristics
1.0 Voltage Grade Table
Voltage Grade
40
45
50
2.0 Extension of Voltage Grades
This report is applicable to other 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
j
below 25°C.
4.0 Snubber Components
When selecting snubber components, care must be taken not to use excessively large values of snubber
capacitor or excessively small values of snubber resistor. Such excessive component values may lead to
device damage due to the large resultant values of snubber discharge current. If required, please consult
the factory for assistance.
5.0 Computer Modelling Parameters
5.1 Device Dissipation Calculations
V
RRM
V
4000
4500
5000
V
RSM
V
4100
4600
5100
V
R
DC V
2400
2700
3000
I
AV
=
−
V
T
0
+
V
T
0
+
4
⋅
ff
⋅
r
T
⋅
W
AV
2
⋅
ff
2
⋅
r
T
2
2
W
AV
=
and:
∆
T
R
th
∆
T
=
T
j
max
−
T
K
Where V
T0
=0.976V, r
T
=0.17mΩ,
R
th
= Supplementary thermal impedance, see table below and
ff
= Form factor, see table below.
Supplementary Thermal Impedance
Conduction Angle
Square wave Double Side Cooled
Square wave Cathode Side Cooled
Sine wave Double Side Cooled
Sine wave Cathode Side Cooled
6 phase (60°)
0.0144
0.0262
0.0133
0.0253
3 phase (120°)
0.0132
0.0251
0.0124
0.0244
½ wave (180°)
0.0126
0.0244
0.0115
0.0234
d.c.
0.0116
0.0235
Form Factors
Conduction Angle
Square wave
Sine wave
6 phase (60°)
2.449
2.778
3 phase (120°)
1.732
1.879
½ wave (180°)
1.414
1.57
d.c.
1
Data Sheet. Types W3743Z#400 to W3743Z#500 Issue 1
Page 3 of 9
January, 2014
Rectifier Diode Types W3743Z#400 to W3743Z#500
5.2 Calculating V
F
using ABCD Coefficients
The on-state characteristic I
F
vs. V
F
, on page 6 is represented in two ways;
(i)
the well established V
T0
and r
T
tangent used for rating purposes and
(ii)
a set of constants A, B, C, D, forming the coefficients of the representative equation for V
F
in
terms of I
F
given below:
V
F
=
A
+
B
⋅
ln
(
I
F
)
+
C
⋅
I
F
+
D
⋅
I
F
The constants, derived by curve fitting software, are given below for both hot and cold characteristics.
The resulting values for V
F
agree with the true device characteristic over a current range, which is limited
to that plotted.
25°C Coefficients
A
B
C
D
0.686301
0.0361394
8.485046 x 10
-5
3.117855 x 10
-3
A
B
C
D
160°C Coefficients
0.217584
0.084283
1.511744 x 10
-4
1.851405 x 10
-3
Data Sheet. Types W3743Z#400 to W3743Z#500 Issue 1
Page 4 of 9
January, 2014
Rectifier Diode Types W3743Z#400 to W3743Z#500
5.3 D.C. Thermal Impedance Calculation
−
t
⎛
τ
r
t
=
∑
r
p
⋅ ⎜
1
−
e
p
⎜
p
=
1
⎝
p
=
n
⎞
⎟
⎟
⎠
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.
r
p
= Amplitude of p
th
term.
τ
p
= Time Constant of r
th
term.
The coefficients for this device are shown in the tables below:
D.C. Double Side Cooled
Term
r
p
1
0.01551
10.04275
2
2.7827×10
-3
1.783567
3
4.2105×10
-3
0.2231307
4
0.9443×10
-3
3.428×10
-3
τ
p
D.C. Double Side Cooled
Term
r
p
1
6.4176×10
-3
1.785337
2
2.7472×10
-3
0.34595
3
1.2515×10
-3
0.099651
4
0.6336×10
-3
0.014214
5
0.59597×10
-3
2.298151×10
-3
τ
p
6.0 Reverse recovery ratings
(i) Q
ra
is based on 50% I
rm
chord as shown in Fig. 1
Fig. 1
(ii) Q
rr
is based on a 150µs integration time i.e.
150
µ
s
Q
rr
=
(iii)
∫
i
0
rr
.
dt
t
1
K Factor
=
t
2
Data Sheet. Types W3743Z#400 to W3743Z#500 Issue 1
Page 5 of 9
January, 2014
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