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BYT42

Vishay Telefunken

www.vishay.de 

 FaxBack +1-408-970-5600

Rev. 3, 24-Jun-98

1 (4)

Document Number 86025

Fast Soft Recovery Rectifier

Features

D

Miniature axial leaded

D

Glass passivated

D

Hermetically sealed glass envelope

D

Low reverse current

D

High reverse voltage

Applications

TV and monitor 

SMPS 

Electronic ballast

95 10526

Absolute Maximum Ratings

T

j

 = 25

_

C

Parameter

Test Conditions

Type

Symbol

Value

Unit

Reverse voltage

BYT42A

V

R

50

V

g

=Repetitive peak reverse voltage

BYT42B

R

=V

RRM

100

V

BYT42D

200

V

BYT42G

400

V

BYT42J

600

V

BYT42K

800

V

BYT42M

1000

V

Peak forward surge current

t

p

=8.3 ms, half sinewave

I

FSM

30

A

Average forward current

Lead length l = 10 mm, 

T

L

 = 25

°

C

I

FAV

1.25

A

Junction and storage 

temperature range

T

j

=T

stg

–55...+175

°

C

Maximum Thermal Resistance

T

j

 = 25

_

C

Parameter

Test Conditions

Symbol

Value

Unit

Junction ambient

Lead length l = 10 mm, T

L

 = constant

R

thJA

60

K/W

on PC board with spacing 25mm

R

thJA

110

K/W

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BYT42

Vishay Telefunken

www.vishay.de 

 FaxBack +1-408-970-5600

Rev. 3, 24-Jun-98

2 (4)

Document Number 86025

Electrical Characteristics

T

j

 = 25

_

C

Parameter

Test Conditions

Type

Symbol

Min

Typ

Max

Unit

Forward voltage

I

F

 =1A

V

F

1.4

V

Reverse current

V

R

=V

RRM

I

R

5

m

A

V

R

=V

RRM

, T

j

=150

°

C

I

R

150

m

A

Reverse breakdown voltage

I

R

=100

m

A

BYT42A

V

(BR)R

50

V

g

R

m

BYT42B

V

(BR)R

100

V

BYT42D

V

(BR)R

200

V

BYT42G

V

(BR)R

400

V

BYT42J

V

(BR)R

600

V

BYT42K

V

(BR)R

800

V

BYT42M

V

(BR)R

1000

V

Reverse recovery time

I

F

=0.5A, I

R

=1A,

i

R

=0.25A

BYT42A

–BYT42J

t

rr

150

ns

R

BYT42K

–BYT42M

t

rr

200

ns

Characteristics  (T

j

 = 25

_

C unless otherwise specified)

0

0

20

40

60

80

120

R       – 

Therm. Resist. Junction / 

Ambient ( K/W

 )

thJA

l – Lead Length ( mm )

96 12151

5

10

15

25

30

20

100

l

l

T

L

=constant

Figure 1.  Max. Thermal Resistance vs. Lead Length

0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

0

20

40

60

80 100 120 140 160 180

T

amb

 – Ambient Temperature ( 

°

C )

96 12139

I      – 

A

verage 

Forward 

Current 

A

 )

FA

V

V

R

= V

R RM

f

v1kHz

R

thJA

v110K/W

PC Board

BYT42A

BYT42M

Figure 2.  Max. Average Forward Current vs. 

Ambient Temperature

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BYT42

Vishay Telefunken

www.vishay.de 

 FaxBack +1-408-970-5600

Rev. 3, 24-Jun-98

3 (4)

Document Number 86025

0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

0

20

40

60

80 100 120 140 160 180

T

amb

 – Ambient Temperature ( 

°

C )

96 12140

I      – 

A

verage 

Forward 

Current 

A

 )

FA

V

V

R

= V

R RM

f

v1kHz

R

thJA

v60K/W

l=10mm

BYT42A

BYT42M

Figure 3.  Max. Average Forward Current vs. 

Ambient Temperature

1

10

100

1000

25

50

75

100

125

150

175

T

j

 – Junction Temperature ( 

°

C )

96 12141

V

R

 = V

RRM

m

I   – Reverse Current (   

A

 )

R

Figure 4.  Max. Reverse Current vs. 

Junction Temperature

0.001

0.010

0.100

1.000

10.000

100.000

0

0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5

V

F

 – Forward Voltage ( V )

96 12138

F

I    – Forward Current ( 

A

 )

T

j

= 25

°

C

T

j

= 175

°

C

Figure 5.  Max. Forward Current vs. Forward Voltage 

Dimensions in mm

Cathode Identification

 3 max.

 0.82 max.

4.2 max.

Standard Glass Case

DOT 30 B

Weight max. 0.5 g

technical drawings

according to DIN

specifications

95 10524

26 min.

26 min.

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BYT42

Vishay Telefunken

www.vishay.de 

 FaxBack +1-408-970-5600

Rev. 3, 24-Jun-98

4 (4)

Document Number 86025

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. Various 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