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4

Document Number 85607

Rev. 1.8, 31-May-07

BZX85-Series

Vishay Semiconductors

Typical Characteristics

Figure 1. Pulse Thermal Resistance vs. Pulse Duration

Figure 2. Dynamic Resistance vs. Zener Current

Figure 3. Dynamic Resistance vs. Zener Current

110 s

10

1

°C/W

2

5

4

3

2

5

4

3

2

5

4

3

r

thA

t

P

18458

t

P

v =

T

P

I

___

T

t

P

0.5

0.2

0.1

0.05

0.02

0.01

0.1

2

110 mA

10

Ω

2

5

4

3

r

zj

I

Z

18459

5

4

32

5

4

3

56

43

7

2

5

4

3

7

1

2

10

100 mA

100

10

1

Ω

2

5

4

3

r

zj

I

Z

18460

5

4

32

5

4

3

7

2

5

4

3

7

43

36

30

24

22

18

Figure 4. Thermal Resistance vs. Lead Length

Figure 5. Admissible Power Dissipation vs. Ambient Temperature

Figure 6. Dynamic Resistance vs. Zener Current

010

20

30 mm

200

100

0

°C/W

R

thA

lead length

18461

max.

typ.

0

100

200 °C

2

1

0

W

P

tot

T

amb

18462

1

2

10

100 mA

1

Ω

r

zj

I

Z

18463

5

4

32

5

4

3

2

5

4

3

2

5

4

3

2

5

4

3

10

7

7

5V1

4V3

18

12

10

7V5

6V2