Date:- 6 Nov, 2014
Data Sheet Issue:- 2
Soft Recovery Diode
Type M0334S/R#160 to M0334S/R#200
Absolute Maximum Ratings
VOLTAGE RATINGS
V
RRM
V
RSM
Repetitive peak reverse voltage, (note 1)
Non-repetitive peak reverse voltage, (note 1)
MAXIMUM
LIMITS
1600-2000
1700-2600
UNITS
V
V
OTHER RATINGS
I
F(AV)M
I
F(AV)M
I
F(RMS)
I
F(d.c.)
I
FSM
I
FSM2
I
2
t
I
2
t
T
j op
T
stg
Maximum average forward current, T
sink
=55°C, (note 2)
Maximum average forward current. T
sink
=100°C, (note 2)
Nominal RMS forward current, T
sink
=25°C, (note 2)
D.C. forward current, T
sink
=25°C, (note 3)
Peak non-repetitive surge t
p
=10ms, V
RM
=60%V
RRM
, (note 3)
Peak non-repetitive surge t
p
=10ms, V
RM
10V,
(note 3)
I
2
t capacity for fusing t
p
=10ms, V
RM
=60%V
RRM
, (note 3)
I
2
t capacity for fusing t
p
=10ms, V
RM
10V,
(note 3)
Operating temperature range
Storage temperature range
MAXIMUM
LIMITS
334
151
676
547
4500
4950
101×10
3
122×10
3
-40 to +125
-40 to +150
UNITS
A
A
A
A
A
A
A
2
s
A
2
s
°C
°C
Notes:-
1)
De-rating factor of 0.13% per °C is applicable for T
j
below 25°C.
2)
single phase; 50Hz, 180° half-sinewave.
3)
Half-sinewave, 125°C T
j
initial.
Data Sheet. Types M0334S/R#160 to M0334S/R#200 Issue 2
Page 1 of 11
November 2014
Soft Recovery Diode Types M0334S/R#160 to M0334S/R#200
Characteristics
PARAMETER
V
FM
V
T0
r
T
V
FRM
I
RRM
Q
rr
Maximum peak forward voltage
Threshold voltage
Slope resistance
Maximum forward recovery voltage
Peak reverse current
Recovered charge
MIN.
-
-
-
-
-
-
TYP.
-
-
-
-
-
-
MAX. TEST CONDITIONS
(Note 1)
1.35
1.00
0.74
150
20
160
di/dt = 1000A/µs
Rated V
RRM
I
FM
=550A, t
p
=500µs, di/dt=40A/µs, V
r
=50V,
50% Chord.
I
FM
=470A
UNITS
V
V
m
V
mA
µC
R
thJC
T
W
t
Thermal resistance, junction to case
Mounting torque
Weight
-
27
-
-
-
-
220
250
0.13
24.5
-
-
S/RJ housing option
K/W
Nm
g
S/RC housing option
Notes:-
1) Unless otherwise indicated T
j
=125°C.
Data Sheet. Types M0334S/R#160 to M0334S/R#200 Issue 2
Page 2 of 11
November 2014
Soft Recovery Diode Types M0334S/R#160 to M0334S/R#200
Notes on Ratings and Characteristics
1.0 Voltage Grade Table
Voltage Grade
16
20
V
RRM
(V)
1600
2000
V
RSM
(V)
1700
2100
V
R
dc
(V)
1040
1250
2.0 De-rating Factor
A blocking voltage de-rating factor of 0.13% per °C is applicable to this device for T
j
below 25°C.
3.0 ABCD Constants
These constants (applicable only over current range of V
F
characteristic in Figure 1) are the coefficients of
the expression for the forward characteristic given below:
V
F
½
A
B
ln(
I
F
)
C
I
F
D
I
F
where I
F
= instantaneous forward current.
4.0 Reverse recovery ratings
(i) Q
ra
is based on 50% I
rm
chord as shown in Fig.(a) below.
(ii) Q
rr
is based on a 150s integration time.
150
s
I.e.
Q
rr
½
i
0
rr
.
dt
(iii)
t
1
K Factor
½
t
2
Data Sheet. Types M0334S/R#160 to M0334S/R#200 Issue 2
Page 3 of 11
November 2014
Soft Recovery Diode Types M0334S/R#160 to M0334S/R#200
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:
T
SINK
½
T
J
(
MAX
)
E
k
f
R
thJK
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.
R
thJK
= d.c. thermal resistance (°C/W)
The total dissipation is now given by:
W
(
tot
)
½
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:
V
r
R
½
4
C
S
di dt
2
Where:
V
r
= Commutating source voltage
C
S
= 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 M0334S/R#160 to M0334S/R#200 Issue 2
Page 4 of 11
November 2014
Soft Recovery Diode Types M0334S/R#160 to M0334S/R#200
7.0 Computer Modelling Parameters
7.1 Device Dissipation Calculations
I
AV
V
T
0
V
T
0
4
ff
2
r
T
W
AV
½
2
ff
2
r
T
Where
V
T0
=1.00V,
r
T
= 0.74m
ff
= form factor (normally unity for fast diode applications)
W
AV
T
½
R
th
T
½
T
j
(
MAX
)
T
K
7.2 Calculation of V
F
using ABCD Coefficients
The forward characteristic I
F
Vs V
F
, on page 6 is represented in two ways;
(i)
the well established V
T0
and r
T
tangent used for rating purposes and
(ii)
a set of constants A, B, C, and D forming the coefficients of the representative equation for V
F
in
terms of I
F
given below:
V
F
½
A
B
ln(
I
F
)
C
I
F
D
I
F
The constants, derived by curve fitting software, are given in this report for both hot and cold
characteristics. The resulting values for V
F
agree with the true device characteristic over a current range,
which is limited to that plotted.
125°C Coefficients
A
B
C
D
8.0 Frequency Ratings
The curves illustrated in figures 4 to 12 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 200 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.
1.163312
-0.03973828
0.714632×10
-3
3.889484×10
-3
Data Sheet. Types M0334S/R#160 to M0334S/R#200 Issue 2
Page 5 of 11
November 2014
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