Page 1
Very Fast Soft Recovery Rectifier
g
R
Features
D
Miniature axial leaded
D
Glass passivated
D
Hermetically sealed glass envelope
D
Low reverse current
D
High reverse voltage
BYT43
Vishay Telefunken
Applications
TV and monitor
SMPS
Electronic ballast
Absolute Maximum Ratings
Tj = 25_C
Parameter Test Conditions Type Symbol Value Unit
Reverse voltage BYT43A V
=Repetitive peak reverse voltage
Peak forward surge current tp=8.3 ms, half sinewave I
Average forward current Lead length l = 10 mm,
TL = 25°C
Junction and storage
temperature range
BYT43B
BYT43D 200 V
BYT43G 400 V
BYT43J 600 V
BYT43K 800 V
BYT43M 1000 V
=V
Tj=T
RRM
FSM
I
FAV
R
stg
95 10526
50 V
100 V
30 A
1 A
–55...+175
°
C
Maximum Thermal Resistance
Tj = 25_C
Parameter Test Conditions Symbol Value Unit
Junction ambient Lead length l = 10 mm, TL = constant R
on PC board with spacing 25mm R
Document Number 86026
Rev. 3, 24-Jun-98
thJA
thJA
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60 K/W
110 K/W
1 (4)
Page 2
BYT43
g
R
m
R
Vishay Telefunken
Electrical Characteristics
Tj = 25_C
Parameter Test Conditions Type Symbol Min Typ Max Unit
Forward voltage IF = 1 A BYT43A
–BYT43J
BYT43K
–BYT43M
Reverse current VR=V
Reverse breakdown voltage IR=100mA BYT43A V
Reverse recovery time IF=0.5A, IR=1A,
RRM
VR=V
RRM
iR=0.25A
, Tj=150°C I
BYT43B V
BYT43D V
BYT43G V
BYT43J V
BYT43K V
BYT43M V
BYT43A
–BYT43J
BYT43K
–BYT43M
V
F
V
F
I
R
R
(BR)R
(BR)R
(BR)R
(BR)R
(BR)R
(BR)R
(BR)R
t
rr
t
rr
1.6 V
2 V
5
m
150
m
50 V
100 V
200 V
400 V
600 V
800 V
1000 V
50 ns
75 ns
A
A
Characteristics (Tj = 25_C unless otherwise specified)
120
100
80
60
ll
40
20
0
thJA
0
R – Therm. Resist. Junction / Ambient ( K/W )
51015 25
l – Lead Length ( mm )96 12151
TL=constant
20
30
Figure 1. Max. Thermal Resistance vs. Lead Length
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
FAV
0.1
I – Average Forward Current ( A )
0
BYT43A
BYT43M
0 20 40 60 80 100 120 140 160 180
T
– Ambient Temperature ( °C )96 12144
amb
Figure 2. Max. Average Forward Current vs.
Ambient Temperature
VR=V
fv1kHz
R
thJA
PC Board
v
110K/W
RRM
BYT43J
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2 (4)
Document Number 86026
Rev. 3, 24-Jun-98
Page 3
BYT43
Vishay Telefunken
1.2
1.1
BYT43A
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
FAV
I – Average Forward Current ( A )
0.1
BYT43J
BYT43M
0
0 20 40 60 80 100 120 140 160 180
T
– Ambient Temperature ( °C )96 12145
amb
VR=V
R
thJA
RRM
fv1kHz
v
60K/W
l=10mm
Figure 3. Max. Average Forward Current vs.
Ambient Temperature
1000
VR = V
RRM
m
100
10
R
I – Reverse Current ( A )
1
25 50 75 100 125 150 175
Tj – Junction Temperature ( °C )96 12146
Figure 4. Max. Reverse Current vs.
Junction Temperature
100.000
10.000
1.000
0.100
0.010
F
I – Forward Current ( A )
0.001
Tj=175°C
Tj=25°C
BYT43A
–BYT43J
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VF – Forward Voltage ( V )96 12143
Figure 5. Max. Forward Current vs. Forward Voltage
100.000
10.000
1.000
0.100
0.010
F
I – Forward Current ( A )
0.001
Tj=175°C
Tj=25°C
BYT43K
–BYT43M
0 0.51.0 1.52.0 2.5 3.0 3.54.0 4.5 5.05.56.0 6.5
VF – Forward Voltage ( V )96 12142
Figure 6. Max. Forward Current vs. Forward Voltage
Dimensions in mm
Standard Glass Case
DOT 30 B
Weight max. 0.5g
26 min. 26 min.
Document Number 86026
Rev. 3, 24-Jun-98
Cathode Identification
4.2 max.
∅ 3 max.
95 10524
technical drawings
according to DIN
specifications
∅ 0.82 max.
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Page 4
BYT43
Vishay Telefunken
Ozone Depleting Substances Policy Statement
It is the policy of Vishay Semiconductor GmbH to
1. Meet all present and future national and international statutory requirements.
2. Regularly and continuously improve the performance of our products, processes, distribution and operating
systems
with respect to their impact on the health and safety of our employees and the public, as well as their impact on
the environment.
It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as
ozone depleting substances (ODSs).
The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and
forbid their use within the next ten years. V arious national and international initiatives are pressing for an earlier ban
on these substances.
Vishay Semiconductor GmbH has been able to use its policy of continuous improvements to eliminate the use of
ODSs listed in the following documents.
1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively
2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Protection Agency (EPA) in the USA
3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively.
Vishay Semiconductor GmbH can certify that our semiconductors are not manufactured with ozone depleting
substances and do not contain such substances.
We reserve the right to make changes to improve technical design and may do so without further notice.
Parameters can vary in different applications. All operating parameters must be validated for each customer application
by the customer. Should the buyer use Vishay-Telefunken products for any unintended or unauthorized application, the
buyer shall indemnify Vishay-Telefunken against all claims, costs, damages, and expenses, arising out of, directly or
indirectly , any claim of personal damage, injury or death associated with such unintended or unauthorized use.
Vishay Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
Telephone: 49 (0)7131 67 2831, Fax number: 49 (0)7131 67 2423
www.vishay.de • FaxBack +1-408-970-5600
4 (4)
Document Number 86026
Rev. 3, 24-Jun-98
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