Date:- 9
th
September,
2014
Data Sheet Issue:- 2
Wespack
Rectifier Diode
Types W3455QK200 to W3455QK220
Absolute Maximum Ratings
VOLTAGE RATINGS
V
RRM
V
RSM
Repetitive peak reverse voltage, (note 1)
Non-repetitive peak reverse voltage, (note 1)
MAXIMUM
LIMITS
2000–2200
2100–2300
UNITS
V
V
OTHER RATINGS
I
F(AV)M
I
F(AV)M
I
F(AV)M
I
F(RMS)
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
3455
2576
1439
6223
5395
20
22
2.00×10
6
2.42×10
6
UNITS
A
A
A
A
A
kA
kA
A
2
s
A
2
s
°C
°C
-40 to +180
-55 to +180
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)
Cathode side cooled, single phase; 50Hz, 180° half-sinewave.
4)
Double side cooled.
5)
Half-sinewave, 180°C T
j
initial.
Data Sheet. Types W3455QK200 to W3455QK220 Issue 2
Page 1 of 9
September, 2014
Wespack
Rectifier Diode Types W3455QK200 to W3455QK220
Characteristics
PARAMETER
V
FM
V
FM
V
T0
r
T
I
RRM
Q
rr
Q
ra
I
rm
t
rr
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
MIN.
-
-
-
-
-
-
-
-
-
-
TYP.
-
-
-
-
-
2600
2000
150
27
-
-
-
-
200
MAX. TEST CONDITIONS
(Note 1)
1.35
2.38
0.940
0.139
50
-
2350
-
-
0.0170 Double side cooled
0.0303 Anode side cooled
0.0387 Cathode side cooled
20
-
Note 2
I
TM
=1000A, t
p
=1000µs, di/dt=10A/µs,
V
r
=50V
Rated V
RRM
I
FM
=3000A
I
FM
=10400A
UNITS
V
V
V
mΩ
mA
µC
µC
A
µs
K/W
K/W
K/W
kN
g
R
thJK
Thermal resistance, junction to heatsink
-
-
F
W
t
Mounting force
Weight
Notes:-
1)
Unless otherwise indicated T
j
=180
°
C.
2)
For other clamp forces, please consult factory.
16
-
Data Sheet. Types W3455QK200 to W3455QK220 Issue 2
Page 2 of 9
September, 2014
Wespack
Rectifier Diode Types W3455QK200 to W3455QK220
Notes on Ratings and Characteristics
1.0 Voltage Grade Table
Voltage Grade
20
22
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
2000
2200
V
RSM
V
2100
2300
V
R
DC V
1250
1350
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
=0.940V, r
T
=0.139mΩ,
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°)
0.0231
0.0417
0.0208
0.0404
3 phase (120°)
0.0207
0.0408
0.0181
0.0396
½ wave (180°)
0.0192
0.0398
0.0170
0.0387
d.c.
0.0170
0.0387
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 W3455QK200 to W3455QK220 Issue 2
Page 3 of 9
September, 2014
Wespack
Rectifier Diode Types W3455QK200 to W3455QK220
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
0.833345405
0.01063337
6.16763×10
-5
4.77996×10
-3
A
B
C
D
180°C Coefficients
0.467658805
0.04530155
1.10218×10
-4
3.45043×10
-3
Data Sheet. Types W3455QK200 to W3455QK220 Issue 2
Page 4 of 9
September, 2014
Wespack
Rectifier Diode Types W3455QK200 to W3455QK220
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
0.01054152
0.2322298
2
4.166135×10
0.05315938
-3
3
9.048202×10
0.0151575
-4
4
1.404721×10
-3
2.630485×10
-3
τ
p
D.C. Cathode Side Cooled
Term
r
p
1
0.02947555
1.276137
2
7.046786×10
-3
0.0795146
3
2.102936×10
-3
3.881676×10
-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 W3455QK200 to W3455QK220 Issue 2
Page 5 of 9
September, 2014
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