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Date:- 1 Sep, 2003
Data Sheet Issue:- 1
Fast Recovery Diode
Type M0736LC400 to M0736LC450
(Old Type No.: SM45CXC374)
Absolute Maximum Ratings
VRRM
VRSM
VOLTAGE RATINGS
Repetitive peak reverse voltage, (note 1)
Non-repetitive peak reverse voltage, (note 1)
MAXIMUM
LIMITS
4000-4500
4100-4600
UNITS
V
V
IF(AVM)
IF(AVM)
IF(AVM)
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=85°C, (note 2)
Maximum average forward. Tsink=85°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=0.6VRRM, (note 5)
Peak non-repetitive surge tp=10ms, VRM10V, (note 5)
I2t capacity for fusing tp=10ms, VRM=0.6VRRM, (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
736
493
291
1474
1229
9.0
10.0
405×103
500×103
-40 to +125
-40 to +125
UNITS
A
A
A
A
A
kA
kA
A2s
A2s
°C
°C
Data Sheet. Types M0736LC400 to M0736LC450 Issue 1
Page 1 of 11
September, 2003

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Characteristics
Fast Recovery Diode Type M0736LC400 to M0736LC450
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
RthJK Thermal resistance, junction to heatsink
F Mounting force
Wt Weight
MIN.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
10
-
TYP.
-
-
-
-
-
-
-
-
1250
450
170
5.2
-
-
-
340
MAX. TEST CONDITIONS (Note 1)
2.56
3.06
1.606
IFM=1400A
IFM=2200A
0.7
200 di/dt = 1000A/µs
120 di/dt = 1000A/µs, Tj=25°C
100 Rated VRRM
100 Rated VRRM, Tj=25°C
-
520 IFM=1000A, tp=1000µs, di/dt=60A/µs,
- Vr=50V, 50% Chord.
-
0.033 Double side cooled
0.066 Single side cooled
20
-
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 M0736LC400 to M0736LC450 Issue 1
Page 2 of 11
September, 2003

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WESTCODE An IXYS Company
Notes on Ratings and Characteristics
1.0 Voltage Grade Table
Voltage Grade
40
42
44
45
VRRM
(V)
4000
4200
4400
4500
Fast Recovery Diode Type M0736LC400 to M0736LC450
VRSM
(V)
4100
4300
4500
4600
VR dc
(V)
2000
2040
2080
2100
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 M0736LC400 to M0736LC450 Issue 1
Page 3 of 11
September, 2003