Nominal

Zener

Voltage

Test

Current

Maximum

regulator

Current

Surge

current

1N4728

76

100

50

10

5

1380

1.0

276

69

1260

1.0

252

400

1.0

64

1190

1.0

234

58

1070

1.0

217

53

970

1.0

193

500

49

890

1.0

178

550

0.5

0.25

45

810

2.0

162

600

41

730

3.0

146

700

750

1000

1500

37

660

4.0

133

34

605

5.0

121

31

550

6.0

110

28

500

7.0

100

25

454

7.6

91

23

414

8.4

83

9

19

344

9.9

69

17

304

11.4

61

15.5

285

12.2

57

14

250

13.7

50

12.5

225

15.2

45

11.5

205

16.7

41

10.5

190

18.2

38

9.5

170

20.6

34

8.5

150

22.8

30

7.5

135

25.1

27

7.0

125

27.4

25

6.5

115

29.7

23

6.0

110

32.7

22

5.5

95

35.8

19

5.0

90

38.8

18

4.5

80

42.6

16

4.0

70

47.1

14

3.7

65

51.7

13

3.3

60

56.0

12

3.0

55

62.2

11

2.8

50

69.2

10

2.5

45

76.0

9

3000

3.3

3.6

3.9

4.3

4.7

5.1

5.6

6.2

6.8

7.5

8.2

9.1

10

11

12

13

15

16

18

20

22

24

27

30

33

36

39

43

47

51

56

62

68

75

82

91

100

1N4729

1N4730

1N4731

1N4732

1N4733

1N4734

1N4735

1N4736

1N4737

1N4738

1N4739

1N4740

1N4741

1N4742

1N4743

1N4744

1N4745

1N4746

1N4747

1N4748

1N4749

1N4750

1N4751

1N4752

1N4753

1N4754

1N4755

1N4756

1N4757

1N4758

1N4759

1N4760

1N4761

1N4762

1N4763

1N4764

Notes: 1) The Zener impedance is derived from the 1KHz AC voltage which results when an AC current having an RMS value equal to 10% of the Zener current (I or I ) is

superimposed on I or I . Zener impedance is measured at two points to insure a sharp knee on the breakdown curve and to eliminate unstable units.

2) Valid provided that electrodes at a distance of 10mm from case are kept at ambient temperature

3) Measured under thermal equilibrium and DC test conditions.

ZT

ZK

ZT

ZK

2)

1)

3)

9

10

10

9

8

7

5

2

3.5

4.0

4.5

5.0

7

8

10

14

16

20

22

23

25

35

40

45

50

60

70

80

95

110

125

150

175

200

250

350

21

380

9.1

76