BZX85C3V3RL Series

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5

Figure 2. Temperature Coefficients

(–55

°C to +150°C temperature range; 90% of the units are in the ranges indicated.)

a. Range for Units to 12 Volts

b. Range for Units to 12 to 100 Volts

+12

+10

+8

+6

+4

+2

0

-2

-4

2

3

456

78

9

10

11

12

100

70

50

30

20

10

7

5

3

2

1

10

20

30

50

70 100

RANGE

RANGE

Figure 3. Typical Thermal Resistance

versus Lead Length

Figure 4. Effect of Zener Current

175

150

125

100

75

50

25

0

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

L, LEAD LENGTH TO HEAT SINK (INCHES)

+6

+4

+2

0

-2

-4

3

4

56

78

20mA

0.01mA

1mA

NOTE: BELOW 3 VOLTS AND ABOVE 8 VOLTS

Figure 5. Maximum Surge Power

100

70

50

30

20

10

7

5

3

2

1

0.01

0.02

0.05

0.1

0.2

0.5

1

2

5

10

20

50

100

200

500 1000

PW, PULSE WIDTH (ms)

This graph represents 90 percentile data points.

For worst case design characteristics, multiply surge power by 2/3.

11V-100V NONREPETITIVE

3.3V-10V NONREPETITIVE

5% DUTY CYCLE

10% DUTY CYCLE

20% DUTY CYCLE

RECTANGULAR

WAVEFORM

INITIAL PULSE