Westcode Semiconductors M1022LC120, M1022LC200 Data Sheet
Soft Recovery Diode
Type M1022LC120 to M1022LC200
Absolute Maximum Ratings
Date:- 6 Jul, 2004
Data Sheet Issue:- 1
(Old Type No.: SM02-18CXC724)
VOLTAGE RATINGS
V
RRM
V
RSM
Repetitive peak reverse voltage, (note 1) 1200-2000 V
Non-repetitive peak reverse voltage, (note 1) 1300-2100 V
OTHER RATINGS
I
F(AVM)
I
F(AVM)
I
F(AVM)
I
F(RMS)
I
F(d.c.)
I
FSM
I
FSM2
I2tI
I2t
T
j op
T
stg
Notes:-
1) De-rating factor of 0.13% per °C is applicable for T
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 T
Maximum average forward current, T
Maximum average forward current. T
Maximum average forward. T
=100°C, (note 3) 260 A
sink
Nominal RMS forward current, T
D.C. forward current, T
=25°C, (note 4) 1687 A
sink
Peak non-repetitive surge tp=10ms, VRM=60%V
=55°C, (note 2) 1022 A
sink
=100°C, (note 2) 467 A
sink
=25°C, (note 2) 2060 A
sink
, (note 5) 14.0 kA
RRM
Peak non-repetitive surge tp=10ms, VRM≤10V, (note 5)
2
t capacity for fusing tp=10ms, VRM=60%V
2
t capacity for fusing tp=10ms, VRM≤10V, (note 5)
I
, (note 5) 0.98×10
RRM
Operating temperature range -40 to +125 °C
Storage temperature range -40 to +125 °C
below 25°C.
j
initial.
j
MAXIMUM
LIMITS
MAXIMUM
LIMITS
15.4 kA
6
1.19×10
6
UNITS
UNITS
A2s
A2s
Data Sheet. Types M1022LC120 to M1022LC200 Issue 1 Page 1 of 11 July, 2004
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WESTCODE An IXYS Company Soft Recovery Diode Types M1022LC120 to M1022LC200
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Characteristics
PARAMETER MIN. TYP. MAX. TEST CONDITIONS (Note 1) UNITS
V
V
r
V
I
Q
Q
I
t
R
FM
T0
T
FRM
RRM
rr
ra
rm
rr
thJK
Maximum peak forward voltage
--1.7I
- - 1.85 I
Threshold voltage - - 1.24 V
Slope resistance - - 0.33
Maximum forward recovery voltage
- - 15 di/dt = 1000A/µs, Tj=25°C
- - 40 di/dt = 1000A/µs
Peak reverse current - - 100 Rated V
Recovered charge - 375 - µC
Recovered charge, 50% Chord - 140 175 µC
Reverse recovery current - 95 - A
Reverse recovery time, 50% Chord - 3.0 -
Thermal resistance, junction to heatsink
- - 0.033 Double side cooled
- - 0.066 Single side cooled
=1400A
FM
=2050A
FM
RRM
I
=1000A, tp=1000µs, di/dt=60A/µs,
FM
V
=50V, 50% Chord.
r
V
mΩ
V
mA
µs
K/W
F Mounting force 10 - 20 kN
W
Weight - 340 - g
t
Notes:-
1) Unless otherwise indicated T
=125°C.
j
Data Sheet. Types M1022LC120 to M1022LC200 Issue 1 Page 2 of 11 July, 2004
WESTCODE
WESTCODE An IXYS Company Soft Recovery Diode Types M1022LC120 to M1022LC200
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Notes on Ratings and Characteristics
1.0 Voltage Grade Table Voltage Grade V
12 1200 1300 820
14 1400 1500 930
16 1600 1700 1040
18 1800 1900 1150
20 2000 2100 1250
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:
where IF = instantaneous forward current.
4.0 Reverse recovery ratings
RRM
(V)
V
RSM
(V)
IDICIBAV ⋅+⋅+⋅+= )ln(
FFFF
V
dc
R
(V)
(i) Qra is based on 50% Irm chord as shown in Fig.(a) below.
(ii) Qrr is based on a 150µs integration time.
s
µ
150
I.e.
(iii)
=
FactorK =
dtiQ
.
rrrr
∫
0
t
1
t
2
Data Sheet. Types M1022LC120 to M1022LC200 Issue 1 Page 3 of 11 July, 2004
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f
)
WESTCODE An IXYS Company Soft Recovery Diode Types M1022LC120 to M1022LC200
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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:
)(
Where k = 0.2314 (°C/W)/s
E
= Area under reverse loss waveform per pulse in joules (W.s.)
= Rated frequency in Hz at the original sink temperature.
R
The total dissipation is now given by:
This device has a low reverse recovered charge and peak reverse recovery current. When measuring the
charge, care must be taken to ensure that:
amplitude forward current.
to avoid overloading the internal amplifiers by the relatively high amplitude forward current signal.
= d.c. thermal resistance (°C/W)
th(J-Hs
originaltot
NOTE 1 - Reverse Recovery Loss by Measurement
(a) AC coupled devices such as current transformers are not affected by prior passage of high
(b) A suitable, polarised, clipping circuit must be connected to the input of the measuring oscilloscope
[]
fEWW
)()(
⋅+=
RfkETT ⋅+⋅−=
thJKMAXjSINK
(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:
2
R
Where: Vr= Commutating source voltage
6.0 Snubber Components When selecting snubber components, care m ust be taken not to us e excessively large values of snubber
capacitor or excessively sm all values of snubber re sistor. Such exc essive com ponent values may lead to
device damage due to the large resultant values of snubber dis charge current. If required, please cons ult
the factory for assistance.
V
⋅= 4
C
R = Snubber resistance
r
di
C
⋅
dt
S
= Snubber capacitance
S
Data Sheet. Types M1022LC120 to M1022LC200 Issue 1 Page 4 of 11 July, 2004
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