3

RATING AND CHARACTERISTICS CURVES ZS4728A THRU ZS4755A

ZS4728A thru ZS4755A

SURFACE MOUNT ZENER TYPE

SURFACE MOUNT ZENER TYPE

1000

700

500

200

100

70

50

20

10

7

5

2

1

1

2

3

5

7 10

20 30

50

70 100

5mA

20mA

400

300

200

100

50

20

10

8

4

1

2

5

10

20

50

100

50% OF BREAKDOWNBIAS

0VBIAS

0VBIAS

FIG. 1A- Range for Units to 12 Volts

+12

+10

+8

+6

+4

+2

0

-2

-4

2

3

4

5

6

7

8

9

10 11

12

RANGE

100

70

50

30

20

FIG.1B- Range for Unit s to 12 to 100

10

7

5

3

2

1

10

20

30

50

70

100

RANGE

Figure 2. Temperature Coefficients (-55

to+150

temperature change;90% of the units are in the ranges indicated.)

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

+6

+4

+2

0

-2

-4

3

4

5

6

7

8

20mA

1mA

0.01mA

NOTE:BELOW 3 VOLTS AAND ABOCE 8

VOLTS

CHANGES IN ZENER CURRENT DO NOT

L, LEAD LENGTH TO HEAT SINK (INCHES )

1.25

1.0

0.75

0.5

0.25

Figure . 7 - Power Te mperature Derating Curve

0

20

40

60

80

100

120 140

160

180 20 0

@

@

@

Figure 3. Typical Ther mal Resistance versus Lead

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