Page 1
Date:- 16 Jun, 2006
WESTCODE
An IXYS Company
Provisional Data
Rectifier Diode
Type W0428##250 to W0428##320
Development Type No.: WX171##250-320
Absolute Maximum Ratings
VOLTAGE RATINGS
V
RRM
V
RSM
I
F(AV)M
I
F(AV)M
I
F(AV)M
I
F(RMS)
I
F(RMS)
I
F(d.c.)
I
FSM
I
FSM2
I2tI
I2t
T
j op
T
stg
Repetitive peak reverse voltage, (note 1) 2500-3200 V
Non-repetitive peak reverse voltage, (note 1) 2600-3300 V
OTHER RATINGS
Maximum average forward current, T
Maximum average forward current. T
Maximum average forward current. T
Nominal RMS forward current, T
Nominal RMS forward current, T
D.C. forward current, T
Peak non-repetitive surge tp=10ms, Vrm=60%V
Peak non-repetitive surge tp=10ms, Vrm≤10V, (note 3)
2
t capacity for fusing tp=10ms, Vrm=60%V
2
I
t capacity for fusing tp=10ms, Vrm≤10V, (note 3)
Operating temperature range -40 to +150 °C
Storage temperature range -40 to +150 °C
case
case
case
=25°C 675
=55°C, (note 2) 428
case
=70°C, (note 2) 380
case
=100°C, (note 2) 271
case
=100°C, (note 2) 425
=25°C, (note 2) 809
, (note 3) 5500 A
RRM
, (note 3) 151×10
RRM
Data Sheet Issue:- 1
MAXIMUM
LIMITS
MAXIMUM
LIMITS
6050 A
3
183×10
3
UNITS
UNITS
A
A
A
A
A
A
A2s
A2s
Notes:-
1) De-rating factor of 0.13% per °C is applicable for T
2) Single phase; 50Hz, 180° half-sinewave.
3) Half-sinewave, 150°C T
Provisional Data Sheet. Type W0428##250 to W 0428##320 AD Issue 1 Page 1 of 8 June, 2006
initial.
j
below 25°C.
j
Page 2
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WESTCODE An IXYS Company Rectifier Diode Type W0428##250 to W0428##320
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Characteristics
PARAMETER MIN. TYP. MAX. TEST CONDITIONS (Note 1) UNITS
V
V
V
r
I
Q
Q
I
t
R
R
T
RRM
rr
rr
Maximum peak forward voltage - - 1.60 ITM=900A V
FM
Maximum peak forward voltage - - 1.80 ITM=1180A V
FM
Threshold voltage - - 0.926 V
T0
Slope resistance - - 0.739
Peak reverse current - - 15 Rated V
Recovered charge - 1000 - µC
rr
Recovered charge, 50% chord - 700 900 µC
ra
Reverse recovery current - 75 - A
I
TM
RRM
=100A, tP=500µs, di/dt=10A/µs, Vr=50V
Reverse recovery time, 50% chord - 19 -
Thermal resistance, junction to case - - 0.13 180° sine K/W
thJC
Thermal resistance, case to heatsink - - 0.04 K/W
thCK
mΩ
mA
µs
F Mounting torque 24 - 30 Nm
W
Weight
t
Notes:-
1) Unless otherwise indicated T
=150°C.
j
- 175 - Outline E
- 250 - Outline F
g
Provisional Data Sheet. Type W0428##250 to W 0428##320 AD Issue 1 Page 2 of 8 June, 2006
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WESTCODE An IXYS Company Rectifier Diode Type W0428##250 to W0428##320
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Notes on Ratings and Characteristics
1.0 Voltage Grade Table
V
Voltage Grade
25 2500 2600 1500
26 2600 2700 1550
28 2800 2900 1650
30 3000 3100 1750
32 3200 3300 1850
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 Tj 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
2
4
I
=
AV
Where VT0=0.926V, rT=0.739mΩ,
00
2
2
⋅⋅
RRM
V
2
rff
T
WrffVV
⋅⋅⋅++−
AVTTT
and:
V
RSM
V
W
AV
=
∆
R
T
th
max
V
R
DC V
TTT
−=∆
Kj
R
= Supplementary thermal impedance, see table below and
th
ff = Form factor, see table below.
Supplementary Thermal Impedance
Conduction Angle 6 phase (60°) 3 phase (120°) ½ wave (180°) d.c.
Square wave 0.174 0.153 0.143
Sine wave 0.172 0.153 0.149
Form Factors
Conduction Angle 6 phase (60°) 3 phase (120°) ½ wave (180°) d.c.
Square wave 2.449 1.732 1.414 1
Sine wave 2.778 1.879 1.57
Provisional Data Sheet. Type W0428##250 to W 0428##320 AD Issue 1 Page 3 of 8 June, 2006
0.130
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WESTCODE An IXYS Company Rectifier Diode Type W0428##250 to W0428##320
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5.2 Calculating VF using ABCD Coefficients
The on-state characteristic I
(i) the well established V
(ii) a set of constants A, B, C, D, forming the coefficients of the representative equation for V
terms of I
The constants, derived by curve fitting software, are given below for both hot and cold characteristics. The
resulting values for V
that plotted.
6.0 Reverse recovery ratings
(i) Qra is based on 50% Irm chord as shown in Fig. 1
given below:
F
F
A
B
C
D
vs. VF, on page 6 is represented in two ways;
F
and rT tangent used for rating purposes and
T0
()
agree with the true device characteristic over a current range, which is limited to
25°C Coefficients 150°C Coefficients
0.7795642
0.04590695
4.64903×10
2.19035×10
A
B
-4
-3
C
D
0.6340984
0.04112559
5.72979×10
5.790022×10
IDICIBAV ⋅+⋅+⋅+= ln
FFFF
-4
-3
in
F
Fig. 1
(ii) Q
is based on a 150µs integration time i.e.
rr
=
(iii)
FactorK =
Provisional Data Sheet. Type W0428##250 to W 0428##320 AD Issue 1 Page 4 of 8 June, 2006
t
1
t
2
150
s
µ
dtiQ
.
rrrr
∫
0
Page 5
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A
WESTCODE An IXYS Company Rectifier Diode Type W0428##250 to W0428##320
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Curves
Figure 1 - Forward characteristics of Limit device
10000
W0428##250-320
AD Issue 1
(A)
FM
1000
100
Instantaneous forward current - I
10
0.0 0.5 1.0 1.5 2.0 2.5
Maximum instantaneous forward voltage - V
FM
25°C
150°C
(V)
Figure 2 - Maximum surge and I2t ratings
100000
(A)
FSM
W0428##250-320
D Issue 1
Tj (initial) = 150°C
10000
Total peak half sine surge current - I
1000
1 3 5 10 1 5 10 50 100
Duration of surge (ms) Duration of surge (cycles @ 50Hz)
I2t: V
I2t: VR=60% V
I
: V
FSM
I
: VR=60% V
FSM
RRM
RRM
≤
10V
RRM
≤10V
RRM
1.00E+07
1.00E+06
1.00E+05
s)
2
t (A
2
Maximum I
Provisional Data Sheet. Type W0428##250 to W 0428##320 AD Issue 1 Page 5 of 8 June, 2006
Page 6
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A
A
A
A
WESTCODE An IXYS Company Rectifier Diode Type W0428##250 to W0428##320
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Figure 3 – Total recovered charge, Q
10000
W0428##250-320
D Issue 1
Tj = 150°C
(µC)
rr
Total recovered charge - Q
1000
1 10 100 1000
Commutation rate - di/dt (A/µs)
rr
1000A
500A
200A
100A
Figure 4 – Recovered charge, Qra (50% chord)
10000
W0428##250-320
D Issue 1
Tj = 150°C
1000A
500A
(µC)
ra
1000
Recovered charge - Q
100
1 10 100 1000
Commutation rate - di/dt (A/µs)
200A
100A
Figure 5 – Peak reverse recovery current, I
1000.000
(A)
rm
100.000
Reverse recovery current - I
W0428##250-320
D Issue 1
Tj = 150°C
10.000
1 10 100 1000
Commutation rate - di/dt (A/µs)
1000A
500A
200A
100A
rm
Figure 6 – Maximum recovery time, trr (50% chord)
100
W0428##250-320
D Issue 1
Tj = 150°C
(µs)
rr
10
Recovery time - t
1
1 10 100 1000
Commutation rate - di/dt (A/µs)
1000A
500A
200A
100A
Provisional Data Sheet. Type W0428##250 to W 0428##320 AD Issue 1 Page 6 of 8 June, 2006
Page 7
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A
A
WESTCODE An IXYS Company Rectifier Diode Type W0428##250 to W0428##320
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Figure 7 – Forward current vs. Power dissipation
1000
W0428##250-320
D Issue 1
900
800
6ø
700
600
500
400
Maximum Forward Dissipation (W)
300
200
100
0
0 200 400 600 800
Mean Forward Current (A) (Whole cycle averaged)
½ wave
3ø
d.c.
Figure 8 – Forward current vs. Heatsink
temperature
160
140
120
100
80
60
40
Maximum permissible heatsink temperature (°C)
20
6ø 3ø ½ wave d.c.
0
0 200 400 600 800
Mean forward current (A) (Whole cycle averaged)
W0428##250-320
D Issue 1
Figure 9 – Transient thermal resistance
1
W0428##250-320
AD Issue 1
0.1
0.01
Thermal impedance (K/W)
R
thJC
0.13K/W
0.001
0.001 0.01 0.1 1 10 100
Time (s)
Provisional Data Sheet. Type W0428##250 to W 0428##320 AD Issue 1 Page 7 of 8 June, 2006
Page 8
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WESTCODE An IXYS Company Rectifier Diode Type W0428##250 to W0428##320
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Outline Drawing & Ordering Information
Outline option E Outline option F
ORDERING INFORMATION (Please quote 10 digit code as below)
W0428 # #
Fixed
Type Code
Typical order code: W0428SE320 – 3200V, V
Polarity code
R = Base Anode
S = Base Cathode
E=¾” HV ceramic stud + lug
, ¾” stud, cathode base, high voltage ceramic housing with lug
RRM
Outline code
F=¾” HV ceramic stud
S
R
♦♦
♦♦
♦♦♦♦
Voltage code
/100
V
DRM
25-32
0
Fixed code
IXYS Semiconductor GmbH
Edisonstraße 15
D-68623 Lampertheim
Tel: +49 6206 503-0
Fax: +49 6206 503-627
E-mail: [email protected]
IXYS Corporation
3540 Bassett Street
Santa Clara CA 95054 USA
Tel: +1 (408) 982 0700
Fax: +1 (408) 496 0670
E-mail: [email protected]
The information contained herein is confidential and i s protected by Copyright. The information may not be used or disclosed
except with the written permission of and in the manner permitted by the proprietors Westcode Semiconductors Ltd.
In the interest of product improvement, Westcode reserves the right to change specifications at any time without prior notice.
Devices with a suffix code (2-letter, 3-letter or letter/digi t/letter combination) added to their generic code are not necessarily subject
to the conditions and limits contained in this report.
Provisional Data Sheet. Type W0428##250 to W 0428##320 AD Issue 1 Page 8 of 8 June, 2006
WESTCODE
An IXYS Company
www.westcode.com
www.ixys.com
Westcode Semiconductors Ltd
Langley Park Way, Langley Park,
Chippenham, Wiltshire, SN15 1GE.
Tel: +44 (0)1249 444524
Fax: +44 (0)1249 659448
E-mail: WSL.sales@westcode,com
Westcode Semiconductors Inc
3270 Cherry Avenue
Long Beach CA 90807 USA
Tel: +1 (562) 595 6971
Fax: +1 (562) 595 8182
E-mail: [email protected]
© Westcode Semiconductors Ltd.
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