Glass-Encapsulate Diodes
ZENER DIODES
1N4728-1N4764
FEATURES
For use in stabilizing and clipping circuits with high
power rating.Standard zener voltage tolerance is ±10%.
Add suffix "A" for ±5% tolerance.
25.4 Min
4.2 Max
25.4 Min
K
MA
O
Se
MECHANICAL DATA
Cas e:DO-41, glass case
Polarity: cathode band
Marking: type number
Approx. weight: 0.35 grams
2.8 Max
0.7 Max
DO-41
Dimensions in millimeters
Terminals : solderable per MIL-STD-202, method 208
ABSOLUTE MAXIMUM RATINGS (TA=25
Parameter
Power dissipation @ T
amb
50
Z-current
Junction temperature
Storage temperature range
Junction ambient I=9.5mm(3/8
), T
L
=constant
ELECTRICAL CHARACTERISTICS (Tamb=25
Symbol
Parameter
Forward voltage at I
F
=200mA
mi
1)Valid provided that leads at a distance of 8 mm from case are kept at ambient temperature.
MAKO Semiconductor Co., Limited 4008-378-873 http://www.makosemi.hk/
co
nd
uc
to
r
Co
.,
Li
mi
te
d
unless otherwise noted)
Symbol
Value
1.0
1)
P
V
/V
Z
200
-55---+200
100
K/W
Unit
W
40
08
-3
78
V
F
P
Diss
I
Z
T
J
T
s
mA
unless otherwise specified)
Min
Typ
-8
73
R
ThJA
ht
tp
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Max
1.2
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.m
Unit
V
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Glass-Encapsulate Diodes
1N4728-1N4764
Max surge
Maximum reverse leakage
c urrent
current
8.3ms
IR
(uA)
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
Nominal zener Test
voltage
c urrent
Type
Vz@IZT
(V)
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
Maximum
dynamic
impedance
Maximum
regulator
current
IZM @Tam b
=50
(mA)
276
252
234
217
193
178
462
146
133
121
110
100
91
83
76
69
61
57
50
45
41
38
34
30
27
25
23
22
19
18
16
K
MA
O
Se
mi
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
IZT
(mA)
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
ZZT@IZT ZZK@IZK IZK
(Ω)
10
10
9
9
8
7
5
2
3.5
4.0
4.5
@VR
(V)
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
IR@Tam b
=25
(mA)
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
(Ω)
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
(m A)
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
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.
MAKO Semiconductor Co., Limited 4008-378-873 http://www.makosemi.hk/
co
nd
uc
to
r
Co
.,
Li
mi
te
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
d
40
08
-3
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
78
-8
73
ht
tp
27.4
29.7
32.7
35.8
38.8
42.6
47.1
51.7
56.0
62.2
69.2
79.0
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13
12
11
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Glass-Encapsulate Diodes
1N4728-1N4764
Typical Characteristics
mA
100
IN4730
IN47
29
IN...
T
j
=25
o
C
IN4727
IN4728
IN4731
IN4732
IN4736
IN4737
IN4738
IN4739
IN4740
40
30
20
10
0
0
1
2
3
4
5
6
7
8
9
10
IN4741
IN4743
IN4744
mA
50
IN4746
IN4747
IN4748
IN4749
IN4742
IN4745
40
IN4750
IN4751
IN4752
Iz
30
IN4753
IN4754
IN4755
IN4756
IN4757
IN4758
IN4761
20
IN4759
IN4760
IN4762
IN4763
10
0
0
10
20
30
40
50
60
70
80
90
100
110
120
Vz
1.0
250
P
d
. Total Power Dissipation (W)
0.8
Thermal Resistance Junction
to Ambient (°C/W)
200
0.6
150
0.4
100
50
IN4764
JA
R
f=1MHz
T
A
=25°C
Differential Zener Impedance ( )
C
j
, Diode Capacitance (pF)
K
MA
O
Se
mi
co
nd
uc
to
r
0.2
0
Iz
IN4733
80
70
60
50
IN4734
IN4735
90
11
12
Vz
IN...
T
j
=25
o
C
T
A
, Ambient Temperature
Fig. 1 Power Dissipation vs Ambient Temperature
Co
0
.,
10
20
Li
100
mi
te
200
d
40
08
1000
-3
78
I, Lead Length (mm)
Fig. 2 Typical Thermal Resistance vs. Lead Length
-8
73
ht
tp
0
5
10
15
20
25
30
0
:/
/w
ww
.m
1000
ak
Iz=1mA
100
2mA
5mA
10mA
20mA
10
os
100
V
R
=0V
V
R
=2V
V
R
=5V
V
R
=20V
V
R
=30V
em
i.
hk
10
/
1
0
30
40
50
60
1
1
10
100
Vz, Zener Voltage (V)
Fig. 3 Junction Capacitance vs Zener Voltage
Vz, Zener Voltage (V)
Fig. 4 Typical Zener Impedance vs. Zener Voltage
MAKO Semiconductor Co., Limited 4008-378-873 http://www.makosemi.hk/
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