1N4728 thru 1N4764
Vishay Semiconductors
formerly General Semiconductor
Zener Diodes
DO-204AL
(DO-41 Glass)
V
Z
Range
3.3 to 100V
Power Dissipation
1.0W
max. .161 (4.1)
min. 1.102 (28.0)
min. 1.102 (28.0)
Features
• Silicon Planar Power Zener Diodes
max.
∅
0.102 (2.6)
• For use in stabilizing and clipping circuits with high
power rating.
• Standard Zener voltage tolerance is ±10%. Add suffix
“A” for ±5% tolerance. Other Zener voltages and toler-
ances are available upon request.
• These diodes are also available in the MELF case with
type designation ZM4728 thru ZM4764
Cathode
Mark
max.
∅
0.034 (0.86)
• For bidirectional product, contact local Technical Sales
office.
Mechanical Data
Dimensions in inches
and (millimeters)
Case:
DO-41 Glass Case
Weight:
approx. 0.0123 oz., 0.35 g
Packaging Codes/Options:
D9/5K per 13" reel (52mm tape), 10K/box
E1/5K per Ammo mag. (52mm tape), 10K/box
Maximum Ratings & Thermal Characteristics
Parameter
Zener Current
Power Dissipation at T
amb
= 50°C
Thermal Resistance Junction to Ambient Air
Junction Temperature
Storage Temperature Range
Ratings at 25°C ambient temperature unless otherwise specified.
Symbol
Value
See Next Page
1.0
(1)
170
(1)
200
–65 to +200
Unit
P
D
R
θJA
T
J
T
S
W
°C/W
°C
°C
Note:
(1) Valid provided that electrodes at a distance of 10mm from case are kept at ambient temperature.
Document Number 88304
25-Jul-02
www.vishay.com
1
1N4728 thru 1N4764
Vishay Semiconductors
formerly General Semiconductor
Electrical Characteristics
Nominal
Zener
voltage
(3)
at
I
ZT
V
Z
(V)
Test
current
(T
A
= 25°C unless otherwise noted).
Maximum V
F
= 1.2V at I
F
= 200mA
Maximum
reverse leakage current
I
R
(µA)
at V
R
(V)
Surge
current
at
T
A
= 25°C
I
R
(mA)
Maximum
regulator
current
(2)
at
T
A
= 50°C
I
ZM
(mA)
Maximum Zener impedance
(1)
Z
ZT
at I
ZT
(Ω)
at
I
ZK
(mA)
Type
I
ZT
(mA)
Z
ZK
(Ω)
1N4728
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
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
76
69
64
58
53
49
45
41
37
34
31
28
25
23
21
19
17
15.5
14
12.5
11.5
10.5
9.5
8.5
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.7
3.3
3.0
2.8
2.5
10
10
9
9
8
7
5
2
3.5
4.0
4.5
5.0
7
8
9
10
14
16
20
22
23
25
35
40
45
50
60
70
80
95
110
125
150
175
200
250
350
400
400
400
400
500
550
600
700
700
700
700
700
700
700
700
700
700
700
750
750
750
750
750
1000
1000
1000
1000
1500
1500
1500
2000
2000
2000
2000
3000
3000
3000
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
0.5
0.5
0.5
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
100
100
50
10
10
10
10
10
10
10
10
10
10
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
1
1
1
1
1
1
2
3
4
5
6
7
7.6
8.4
9.1
9.9
11.4
12.2
13.7
15.2
16.7
18.2
20.6
22.8
25.1
27.4
29.7
32.7
35.8
38.8
42.6
47.1
51.7
56.0
62.2
69.2
76.0
1380
1260
1190
1070
970
890
810
730
660
605
550
500
454
414
380
344
304
285
250
225
205
190
170
150
135
125
115
110
95
90
80
70
65
60
55
50
45
276
252
234
217
193
178
162
146
133
121
110
100
91
83
76
69
61
57
50
45
41
38
34
30
27
25
23
22
19
18
16
14
13
12
11
10
9
Notes:
(1) The Zener impedance is derived from the 1KH
Z
AC voltage which results when an AC current having an RMS value equal to 10% of the Zener current (I
ZT
or
I
ZK
) is superimposed on I
ZT
or I
ZK
. 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
www.vishay.com
2
Document Number 88304
25-Jul-02
1N4728 thru 1N4764
Vishay Semiconductors
formerly General Semiconductor
Ratings and
Characteristic Curves
(T
A
= 25°C unless otherwise noted)
1N4728 ... 1N4764
P
D
Document Number 88304
25-Jul-02
www.vishay.com
3
Legal Disclaimer Notice
Vishay
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's
terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express
or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness
for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify Vishay for any damages resulting from such improper use or sale.
Document Number: 91000
Revision: 08-Apr-05
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