M0358WC160 (IXYS)
Soft Recovery Diode

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An IXYS Company
Date:- 12 Jul, 2004
Data Sheet Issue:- 1
Soft Recovery Diode
Type M0358WC120 to M0358WC180
Old Type No.: SM12-18CXC100
Absolute Maximum Ratings
VRRM
VRSM
VOLTAGE RATINGS
Repetitive peak reverse voltage, (note 1)
Non-repetitive peak reverse voltage, (note 1)
MAXIMUM
LIMITS
1200-1800
1300-1900
UNITS
V
V
IF(AV)M
IF(AV)M
IF(AV)M
IF(RMS)
IF(d.c.)
IFSM
IFSM2
I2t
I2t
Tj op
Tstg
OTHER RATINGS
Maximum average forward current, Tsink=55°C, (note 2)
Maximum average forward current. Tsink=100°C, (note 2)
Maximum average forward. Tsink=100°C, (note 3)
Nominal RMS forward current, Tsink=25°C, (note 2)
D.C. forward current, Tsink=25°C, (note 4)
Peak non-repetitive surge tp=10ms, VRM=60%VRRM, (note 5)
Peak non-repetitive surge tp=10ms, VRM10V, (note 5)
I2t capacity for fusing tp=10ms, VRM=60%VRRM, (note 5)
I2t capacity for fusing tp=10ms, VRM10V, (note 5)
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.
MAXIMUM
LIMITS
358
157
85
732
578
2450
2695
30.0×103
36.3×103
-40 to +125
-40 to +125
UNITS
A
A
A
A
A
A
A
A2s
A2s
°C
°C
Data Sheet. Types M0358WC120 to M0358WC180 Issue 1
Page 1 of 11
July, 2004


M0358WC160 (IXYS)
Soft Recovery Diode

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Characteristics
Soft Recovery Diode Types M0358WC120 to M0358WC180
PARAMETER
VFM Maximum peak forward voltage
VT0 Threshold voltage
rT Slope resistance
VFRM Maximum forward recovery voltage
IRRM Peak reverse current
Qrr Recovered charge
Qra Recovered charge, 50% Chord
Irm Reverse recovery current
trr Reverse recovery time, 50% Chord
R
thJK
Thermal resistance, junction to heatsink
F Mounting force
Wt Weight
MIN.
-
-
-
-
-
-
-
-
-
-
-
-
-
3.3
-
TYP. MAX. TEST CONDITIONS (Note 1)
- 1.97 IFM=635A
- 2.1 IFM=750A
- 1.46
- 0.80
- 35 di/dt = 1000A/µs, 25°C
- 80 di/dt = 1000A/µs
- 20 Rated VRRM
125 -
65 90 IFM=1000A, tp=500µs, di/dt=100A/µs,
80 - Vr=50V, 50% Chord.
1.4 -
- 0.09 Double side cooled
- 0.18 Single side cooled
- 5.5
70 -
Notes:-
1) Unless otherwise indicated Tj=125°C.
UNITS
V
V
m
V
mA
µC
µC
A
µs
K/W
kN
g
Data Sheet. Types M0358WC120 to M0358WC180 Issue 1
Page 2 of 11
July, 2004


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Soft Recovery Diode

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Notes on Ratings and Characteristics
1.0 Voltage Grade Table
Voltage Grade
12
14
16
18
VRRM
(V)
1200
1400
1600
1800
Soft Recovery Diode Types M0358WC120 to M0358WC180
VRSM
(V)
1300
1500
1700
1900
VR dc
(V)
820
930
1040
1150
2.0 De-rating Factor
A blocking voltage de-rating factor of 0.13% per °C is applicable to this device for Tj below 25°C.
3.0 ABCD Constants
These constants (applicable only over current range of VF characteristic in Figure 1) are the coefficients of
the expression for the forward characteristic given below:
VF = A + B ln(I F ) + C I F + D I F
where IF = instantaneous forward current.
4.0 Reverse recovery ratings
(i) Qra is based on 50% Irm chord as shown in Fig.(a) below.
(ii) Qrr is based on a 150µs integration time.
150 µs
I.e. Qrr = irr .dt
0
(iii)
K Factor = t1
t2
Data Sheet. Types M0358WC120 to M0358WC180 Issue 1
Page 3 of 11
July, 2004


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Soft Recovery Diode

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Soft Recovery Diode Types M0358WC120 to M0358WC180
5.0 Reverse Recovery Loss
The following procedure is recommended for use where it is necessary to include reverse recovery loss.
From waveforms of recovery current obtained from a high frequency shunt (see Note 1) and reverse
voltage present during recovery, an instantaneous reverse recovery loss waveform must be constructed.
Let the area under this waveform be E joules per pulse. A new sink temperature can then be evaluated
from:
[ ]TSINK = TJ (MAX ) E k + f RthJK
Where k = 0.2314 (°C/W)/s
E = Area under reverse loss waveform per pulse in joules (W.s.)
f = Rated frequency in Hz at the original sink temperature.
RthJK = d.c. thermal resistance (°C/W)
The total dissipation is now given by:
W(tot ) = W(original ) + E f
NOTE 1 - Reverse Recovery Loss by Measurement
This device has a low reverse recovered charge and peak reverse recovery current. When measuring the
charge, care must be taken to ensure that:
(a) AC coupled devices such as current transformers are not affected by prior passage of high
amplitude forward current.
(b) A suitable, polarised, clipping circuit must be connected to the input of the measuring oscilloscope
to avoid overloading the internal amplifiers by the relatively high amplitude forward current signal.
(c) Measurement of reverse recovery waveform should be carried out with an appropriate critically
damped snubber, connected across diode anode to cathode. The formula used for the calculation of this
snubber is shown below:
R2 = 4 Vr
CS
di
dt
Where: Vr = Commutating source voltage
CS = Snubber capacitance
R = Snubber resistance
6.0 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.
Data Sheet. Types M0358WC120 to M0358WC180 Issue 1
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Soft Recovery Diode

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7.0 Computer Modelling Parameters
7.1 Device Dissipation Calculations
Soft Recovery Diode Types M0358WC120 to M0358WC180
I AV = − VT 0 +
VT 0 + 4 ff 2 rT WAV
2 ff 2 rT
Where VT0 =1.46V, rT = 0.8m
ff = form factor (normally unity for fast diode applications)
WAV
=
T
Rth
T = Tj(MAX ) TK
7.2 Calculation of VF using ABCD Coefficients
The forward characteristic IF Vs VF, on page 6 is represented in two ways;
(i) the well established VT0 and rT tangent used for rating purposes and
(ii) a set of constants A, B, C, and D forming the coefficients of the representative equation for VF in
terms of IF given below:
VF = A + B ln(IF ) + C I F + D IF
The constants, derived by curve fitting software, are given in this report for hot characteristics. The
resulting values for VF agree with the true device characteristic over a current range, which is limited to
that plotted.
25°C Coefficients 125°C Coefficients
A 0.04024108
-0.873541163
B 0.3593347
C 6.9923×10-4
0.5784799
9.91536×10-4
D -0.03048276
-0.0590576
8.0 Frequency Ratings
The curves illustrated in figures 8 to 16 are for guidance only and are superseded by the maximum ratings
shown on page 1.
9.0 Square wave ratings
These ratings are given for load component rate of rise of forward current of 100 and 500 A/µs.
10.0 Duty cycle lines
The 100% duty cycle is represented on all the ratings by a straight line. Other duties can be included as
parallel to the first.
Data Sheet. Types M0358WC120 to M0358WC180 Issue 1
Page 5 of 11
July, 2004


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Soft Recovery Diode

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Curves
Figure 1 – Forward characteristics of Limit device
10000
M0358WC120-180
Issue 1
25°C
125°C
Soft Recovery Diode Types M0358WC120 to M0358WC180
Figure 2 – Maximum forward recovery voltage
1000
M0358WC120-180
Issue 1
125°C
25°C
100
1000
10
100
0
12345
Maximum instantaneous forward voltage - VFM (V)
Figure 3 - Recovered charge, Qrr
1000
M0358WC120-180
Issue 1
Tj = 125°C
1500A
1000A
500A
300A
100
1
10
100
1000
10000
Rate of rise of forward current - di/dt (A/µs)
Figure 4 - Recovered charge, Qra (50% chord)
1000
M0358WC120-180
Issue 1
Tj = 125°C
1500A
1000A
500A
100 300A
10
1
10 100
Commutation rate - di/dt (A/µs)
1000
10
1
10 100
Commutation rate - di/dt (A/µs)
1000
Data Sheet. Types M0358WC120 to M0358WC180 Issue 1
Page 6 of 11
July, 2004


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Soft Recovery Diode

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Figure 5 - Maximum reverse current, Irm
1000
M0358WC120-180
Issue 1
Tj = 125°C
1500A
1000A
500A
300A
100
Soft Recovery Diode Types M0358WC120 to M0358WC180
Figure 6 - Maximum recovery time, trr (50% chord)
10
M0358WC120-180
Issue 1
Tj = 125°C
10
1500A
1000A
500A
300A
1
1 10 100 1000
Commutation rate - di/dt (A/µs)
Figure 7 – Reverse recovery energy per pulse
1000
M0358WC120-180
Issue 1
Tj = 125°C
Vr=67% VRRM
0.1µF, 10
Snubber
1000A
500A
250A
125A
1
1 10 100
Commutation rate - di/dt (A/µs)
Figure 8 - Sine wave energy per pulse
1.00E+02
M0358WC120-180
Issue 1
Tj = 125°C
1.00E+01
3000A
2000A
1000A
500A
250A
1000
100 1.00E+00
1.00E-01
10
1
10 100
Commmutation rate - di/dt (A/µs)
500A
1000
1.00E-02
1.00E-05
1.00E-04
1.00E-03
Pulse width (s)
1.00E-02
Data Sheet. Types M0358WC120 to M0358WC180 Issue 1
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July, 2004


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Soft Recovery Diode

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Figure 9 - Sine wave frequency vs. pulse width
1.00E+05
M0358WC120-180
Issue 1
TK = 55°C
250A
1.00E+04 500A
100% Duty Cycle
1000A
1.00E+03
2000A
3000A
1.00E+02
Soft Recovery Diode Types M0358WC120 to M0358WC180
Figure 10 - Sine wave frequency vs. pulse width
1.00E+05
M0358WC120-180
Issue 1
TK = 85°C
250A
1.00E+04
500A
100% Duty Cycle
1000A
1.00E+03
2000A
3000A
1.00E+02
1.00E+01
1.00E-05
1.00E-04
1.00E-03
Pulse width (s)
1.00E-02
Figure 11 - Square wave energy per pulse
1.00E+03
M0358WC120-180
Issue 1
di/dt =100A/µs
Tj = 125°C
1.00E+02
1.00E+01
1.00E+00
3000A
2000A
1.00E+01
1.00E-05
1.00E-04
1.00E-03
Pulse width (s)
1.00E-02
Figure 12 - Square wave energy per pulse
1.00E+03
M0358WC120-180
Issue 1
di/dt =500A/µs
Tj = 125°C
1.00E+02
1.00E+01
3000A
2000A
1000A
500A
250A
1.00E+00
1000A
1.00E-01
500A
250A
1.00E-02
1.00E-05
1.00E-04
1.00E-03
Pulse width (s)
1.00E-02
1.00E-01
1.00E-02
1.00E-05
1.00E-04
1.00E-03
Pulse width (s)
1.00E-02
Data Sheet. Types M0358WC120 to M0358WC180 Issue 1
Page 8 of 11
July, 2004


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Soft Recovery Diode

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Figure 13 - Square wave frequency vs. pulse width
1.00E+05
250A
M0358WC120-180
Issue 1
di/dt =100A/µs
TK=55°C
500A
1.00E+04
100% Duty Cycle
1000A
1.00E+03
2000A
3000A
1.00E+02
Soft Recovery Diode Types M0358WC120 to M0358WC180
Figure 14 - Square wave frequency vs. pulse width
1.00E+05
M0358WC120-180
Issue 1
di/dt =500A/µs
TK = 55°C
250A
100% Duty Cycle
1.00E+04
500A
1000A
1.00E+03
2000A
1.00E+02
3000A
1.00E+01
1.00E-05
1.00E-04
1.00E-03
Pulse width (s)
1.00E-02
Figure 15 - Square wave frequency vs. pulse width
1.00E+05
250A
M0358WC120-180
Issue 1
di/dt =100A/µs
TK = 85°C
1.00E+04
500A
100% Duty Cycle
1000A
1.00E+03
2000A
1.00E+01
1.00E-05
1.00E-04
1.00E-03
Pulse width (s)
1.00E-02
Figure 16 - Square wave frequency vs. pulse width
1.00E+05
M0358WC120-180
Issue 1
di/dt =500A/µs
TK = 85°C
250A
1.00E+04
500A
100% Duty Cycle
1.00E+03
1000A
1.00E+02
3000A
1.00E+02
2000A
1.00E+01
1.00E-05
1.00E-04
1.00E-03
Pulse width (s)
1.00E-02
1.00E+01
1.00E-05
1.00E-04
1.00E-03
Pulse width (s)
1.00E-02
Data Sheet. Types M0358WC120 to M0358WC180 Issue 1
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July, 2004


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Soft Recovery Diode

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Figure 17 – Maximum surge and I2t ratings
10000
1000
Soft Recovery Diode Types M0358WC120 to M0358WC180
1.00E+06
I2t: VRRM10V
I2t: VR=60% VRRM
IFSM: VRRM10V
1.00E+05
IFSM: VR=60% VRRM
100 1
3 5 10 1
Duration of surge (ms)
Figure 18 – Transient thermal impedance
1
M0358WC120-180
Issue 1
0.1
Tj (initial) = 125°C
5 10
M0358WC120-180
Issue 1
50 100
Duration of surge (cycles @ 50Hz)
1.00E+04
SSC 0.18K/W
DSC 0.09K/W
0.01
0.001
0.0001
0.0001
0.001
0.01 0.1
Time (s)
1
10 100
Data Sheet. Types M0358WC120 to M0358WC180 Issue 1
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July, 2004


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Soft Recovery Diode

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Outline Drawing & Ordering Information
Soft Recovery Diode Types M0358WC120 to M0358WC180
ORDERING INFORMATION
(Please quote 10 digit code as below)
M0358
Fixed
Type Code
WC
Fixed
outline code
Voltage code
VRRM/100
12-18
0
Fixed code
Order code: M0358WC160 – 1600V VRRM, 14.4mm clamp height capsule.
IXYS Semiconductor GmbH
Edisonstraße 15
D-68623 Lampertheim
Tel: +49 6206 503-0
Fax: +49 6206 503-627
E-mail: marcom@ixys.de
WESTCODE
An IXYS Company
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
IXYS Corporation
3540 Bassett Street
Santa Clara CA 95054 USA
Tel: +1 (408) 982 0700
Fax: +1 (408) 496 0670
E-mail: sales@ixys.net
www.westcode.com
www.ixys.com
Westcode Semiconductors Inc
3270 Cherry Avenue
Long Beach CA 90807 USA
Tel: +1 (562) 595 6971
Fax: +1 (562) 595 8182
E-mail: WSI.sales@westcode.com
The information contained herein is confidential and is 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/digit/letter combination) added to their generic code are not necessarily
subject to the conditions and limits contained in this report.
© Westcode Semiconductors Ltd.
Data Sheet. Types M0358WC120 to M0358WC180 Issue 1
Page 11 of 11
July, 2004




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