Westcode Semiconductors M0914LC200, M0914LC250 Data Sheet
Fast Recovery Diode
Type M0914LC200 to M0914LC250
Absolute Maximum Ratings
Date:- 17 Jan, 2003
Data Sheet Issue:- 1
Old Type No.: SM18-25CXC804
VOLTAGE RATINGS
V
RRM
V
RSM
Repetitive peak reverse voltage, (note 1) 2000-2500 V
Non-repetitive peak reverse voltage, (note 1) 2100-2600 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, 150°C T
Maximum average forward current, T
Maximum average forward current. T
Maximum average forward. T
=85°C, (note 3) 337 A
sink
Nominal RMS forward current, T
D.C. forward current, T
=25°C, (note 4) 1442 A
sink
Peak non-repetitive surge tp=10ms, VRM=0.6V
=55°C, (note 2) 914 A
sink
=85°C, (note 2) 578 A
sink
=25°C, (note 2) 1730 A
sink
, (note 5) 8.5 kA
RRM
Peak non-repetitive surge tp=10ms, VRM≤10V, (note 5)
2
t capacity for fusing tp=10ms, VRM=0.6V
2
t capacity for fusing tp=10ms, VRM≤10V, (note 5) 442×10
I
, (note 5)
RRM
Operating temperature range -40 to +150 °C
Storage temperature range -40 to +150 °C
below 25°C.
j
initial.
j
MAXIMUM
LIMITS
MAXIMUM
LIMITS
9.4 kA
3
361×10
3
UNITS
UNITS
A2s
A2s
Data Sheet. Types M0914LC200 to M0914LC250 Issue 1 Page 1 of 11 January, 2003
WESTCODE
WESTCODE An IXYS Company Fast Recovery Diode Type M0914LC200 to M0914LC250
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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
--3.0I
Threshold voltage - - 1.768 V
Slope resistance - - 0.653
Maximum forward recovery voltage - - 75 di/dt = 1000A/µs V
- - 50 Rated V
--4.1I
Peak reverse current
- - 50 Rated V
Recovered charge - 300 - µC
Recovered charge, 50% Chord - 170 250 µC
Reverse recovery current - 110 - A
Reverse recovery time, 50% Chord - 3.2 -
- - 0.032 Double side cooled
Thermal resistance, junction to heatsink
- - 0.064 Single side cooled
=3770A
FM
=1800A
FM
RRM
, Tj=25°C
RRM
I
=1000A, tp=1000µs, di/dt=60A/µs,
FM
=50V, 50% Chord.
V
r
V
mΩ
mA
µs
K/W
F Mounting force 10 - 20 kN
W
Weight - 340 - g
t
Notes:-
1) Unless otherwise indicated T
=150°C.
j
Data Sheet. Types M0914LC200 to M0914LC250 Issue 1 Page 2 of 11 January, 2003
WESTCODE
WESTCODE An IXYS Company Fast Recovery Diode Type M0914LC200 to M0914LC250
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Notes on Ratings and Characteristics
1.0 Voltage Grade Table
Voltage Grade V
20 2000 2100 1250
22 2200 2300 1350
25 2500 2600 1500
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
(i) Qra is based on 50% Irm chord as shown in Fig.(a) below.
RRM
(V)
V
RSM
(V)
IDICIBAV ⋅+⋅+⋅+= )ln(
FFFF
V
dc
R
(V)
(ii) Qrr is based on a 150µs integration time.
s
µ
150
I.e.
(iii)
Data Sheet. Types M0914LC200 to M0914LC250 Issue 1 Page 3 of 11 January, 2003
=
FactorK =
dtiQ
.
rrrr
∫
0
t
1
t
2
WESTCODE
f
)
WESTCODE An IXYS Company Fast Recovery Diode Type M0914LC200 to M0914LC250
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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
fEWW
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
)()(
⋅+=
RfkETT
⋅+⋅−=
)()( HsJthMAXJSINK
−
(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 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.
V
⋅= 4
C
R = Snubber resistance
r
di
C
⋅
dt
S
= Snubber capacitance
S
Data Sheet. Types M0914LC200 to M0914LC250 Issue 1 Page 4 of 11 January, 2003