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Dated : 10/05/2005
®
SEMTECH ELECTRONICS LTD.
(Subsidiary of Sino-Tech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
ZM 4728...ZM 4764
Nominal
Zener
voltage
3)
Test
current
Maximum Zener
Impedance
1)
Maximum reverse
leakage current
Surge
current
Maxi-
mum
regulator
current
2)
TYPE
at
IZT
Vz V
IZTmA
at
IZT
VzΩ
VzkΩ
at
IZKmA
IR μA
at
VR V
at
TA = 25
oC
IR mA
IZMmA
ZM4728
3.3
76
10
400
1
150
1
1375
275
ZM4729
3.6
69
10
400
1
100
1
1260
252
ZM4730
3.9
64
9
400
1
100
1
1190
234
ZM4731
4.3
58
9
400
1
50
1
1070
217
ZM4732
4.7
53
8
500
1
10
1
970
193
ZM4733
5.1
49
7
550
1
10
1
890
178
ZM4734
5.6
45
5
600
1
10
2
810
162
ZM4735
6.2
41
2
700
1
10
3
730
146
ZM4736
6.8
37
3.5
700
1
10
4
660
133
ZM4737
7.5
34
4.0
700
0.5
10
5
605
121
ZM4738
8.2
31
4.5
700
0.5
10
6
550
110
ZM4739
9.1
28
5.0
700
0.5
10
7
500
100
ZM4740
10
25
7
700
0.25
10
7.6
454
91
ZM4741
11
23
8
700
0.25
5
8.4
414
83
ZM4742
12
21
9
700
0.25
5
9.1
380
76
ZM4743
13
19
10
700
0.25
5
9.9
344
69
ZM4744
15
17
14
700
0.25
5
11.4
304
61
ZM4745
16
15.5
16
700
0.25
5
12.2
285
57
ZM4746
18
14
20
750
0.25
5
13.7
250
50
ZM4747
20
12.5
22
750
0.25
5
15.2
225
45
ZM4748
22
11.5
23
750
0.25
5
16.7
205
41
ZM4749
24
10.5
25
750
0.25
5
18.2
190
38
ZM4750
27
9.5
35
750
0.25
5
20.6
170
34
ZM4751
30
8.5
40
1000
0.25
5
22.8
150
30
ZM4752
33
7.5
45
1000
0.25
5
25.1
135
27
ZM4753
36
7.0
50
1000
0.25
5
27.4
125
25
ZM4754
39
6.5
60
1000
0.25
5
29.7
115
23
ZM4755
43
6.0
70
1500
0.25
5
32.7
110
22
ZM4756
47
5.5
80
1500
0.25
5
35.8
95
19
ZM4757
51
5.0
95
1500
0.25
5
38.8
90
18
ZM4758
56
4.5
110
2000
0.25
5
42.6
80
16
ZM4759
62
4.0
125
2000
0.25
5
47.1
70
14
ZM4760
68
3.7
150
2000
0.25
5
51.7
65
13
ZM4761
75
3.3
175
2000
0.25
5
56.0
60
12
ZM4762
82
3.0
200
3000
0.25
5
62.2
55
11
ZM4763
91
2.8
250
3000
0.25
5
69.2
50
10
ZM4764
100
2.5
350
3000
0.25
5
76
45
9
1) The Zener Impedance is derived from the 60 Hz AC voltage which results when an AC current having an RMS value
equal to 10% of the Zener current (IZT or IZK ) is superimposed on IZT or IZK . 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 are kept at ambient temperature.
3) Measured under thermal equilibrium and DC test conditions.
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