1N4728 THRU 1N4764
ZENER DIODES
FEATURES
Silicon Planar Power Zener Diodes
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
tolerances are available upon request.
These diodes are also available in the MELF case with type
designation ZM4728 thru ZM4764
MECHANICAL DATA
Case: DO-41 Glass Case
Weight: approx. 0.35 g
MAXIMUM RATINGS
Ratings at 25C ambient temperature unless otherwise specified.
Dimensions in inches and (millimeters)
m
i
n. 1.1
02 (
28.0)
mi
n. 1.102
(
2
8
.
0)
max
. .161
(
4.1)
max.
Cathode
0.034 (0.86)
Mark
max.
0.102 (2.6)
DO-41 Glass
12/3/98
Characteristics at Tamb = 25 C
SYMBOL
MIN.
TYP.
MAX.
UNIT
Thermal Resistance
R
thJA
170
(1)
C/W
Junction to Ambient Air
Forward Voltage
V
F
1.2
Volts
at I
F
= 200 mA
NOTES:
(1) Valid provided that electrodes at a distance of 10mm from case are kept at ambient temperature
SYMBOL
VALUE
UNIT
Zener Current (see Table "Characteristics")
Power Dissipation at T
amb
= 25C
P
tot
1.0
(1)
Watts
Junction Temperature
T
j
175
C
Storage Temperature Range
T
S
65 to +175
C
1N4728 THRU 1N4764
ELECTRICAL CHARACTERISTICS
Ratings at 25C ambient temperature unless otherwise specified.
Type
Nominal
Zener
voltage
(3)
at
I
ZT
V
Z
V
Test
current
I
ZT
mA
Maximum Zener impedance
(1)
Maximum
reverse leakage current
Z
ZT
at I
ZT
Z
ZK
at
I
ZK
mA
I
R
A
at V
R
V
Surge
current
at
T
A
= 25C
I
R
mA
Maximum
regulator
current
(2)
I
ZM
mA
1N4728
3.3
76
10
400
1.0
100
1
1380
276
1N4729
3.6
69
10
400
1.0
100
1
1260
252
1N4730
3.9
64
9
400
1.0
50
1
1190
234
1N4731
4.3
58
9
400
1.0
10
1
1070
217
1N4732
4.7
53
8
500
1.0
10
1
970
193
1N4733
5.1
49
7
550
1.0
10
1
890
178
1N4734
5.6
45
5
600
1.0
10
2
810
162
1N4735
6.2
41
2
700
1.0
10
3
730
146
1N4736
6.8
37
3.5
700
1.0
10
4
660
133
1N4737
7.5
34
4.0
700
0.5
10
5
605
121
1N4738
8.2
31
4.5
700
0.5
10
6
550
110
1N4739
9.1
28
5.0
700
0.5
10
7
500
100
1N4740
10
25
7
700
0.25
10
7.6
454
91
1N4741
11
23
8
700
0.25
5
8.4
414
83
1N4742
12
21
9
700
0.25
5
9.1
380
76
1N4743
13
19
10
700
0.25
5
9.9
344
69
1N4744
15
17
14
700
0.25
5
11.4
304
61
1N4745
16
15.5
16
700
0.25
5
12.2
285
57
1N4746
18
14
20
750
0.25
5
13.7
250
50
1N4747
20
12.5
22
750
0.25
5
15.2
225
45
1N4748
22
11.5
23
750
0.25
5
16.7
205
41
1N4749
24
10.5
25
750
0.25
5
18.2
190
38
1N4750
27
9.5
35
750
0.25
5
20.6
170
34
1N4751
30
8.5
40
1000
0.25
5
22.8
150
30
1N4752
33
7.5
45
1000
0.25
5
25.1
135
27
1N4753
36
7.0
50
1000
0.25
5
27.4
125
25
1N4754
39
6.5
60
1000
0.25
5
29.7
115
23
1N4755
43
6.0
70
1500
0.25
5
32.7
110
22
1N4756
47
5.5
80
1500
0.25
5
35.8
95
19
1N4757
51
5.0
95
1500
0.25
5
38.8
90
18
1N4758
56
4.5
110
2000
0.25
5
42.6
80
16
1N4759
62
4.0
125
2000
0.25
5
47.1
70
14
1N4760
68
3.7
150
2000
0.25
5
51.7
65
13
1N4761
75
3.3
175
2000
0.25
5
56.0
60
12
1N4762
82
3.0
200
3000
0.25
5
62.2
55
11
1N4763
91
2.8
250
3000
0.25
5
69.2
50
10
1N4764
100
2.5
350
3000
0.25
5
76.0
45
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
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