1N4728A-G SERIES
SILICON ZENER DIODE
VOLTAGE
FEATURES
• Low inductance
• Glass package has Underwriters Laboratory Flammability Classification
• Lead free in compliance with EU RoHS 2011/65/EU directive
1.0(26.0)MIN.
3.3 to 75 Volt
POWER
1 Watt
• High temperature soldering : 260°C /10 seconds at terminals
0.030(0.75)
0.026(0.65)
MECHANICAL DATA
• Case: Molded Glass DO-41G
• Terminals: Axial leads, solderable per MIL-STD-750, Method 2026
• Polarity: Color band denotes positive end
• Weight: 0.012 ounce, 0.317 gram
0.177(4.5)
0.138(3.5)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
Parameter
Power Dissipation at T
A
<50
O
C
Junction Temperature
Storage Temperature Range
Symbol
1.0(26.0)MIN.
0.107(2.7)
0.080(2.0)
Value
1*
-65 to +200
-65 to +200
Units
W
O
P
TOT
T
J
T
STG
C
C
O
*Valid provided that leads at a distance of 10mm from case are kept at ambient temperature.
Parameter
Thermal Resistance Junction to Ambient Air
Forward Voltage at I
F
= 200mA
Symbol
Min.
--
--
Typ.
Max.
170*
1.2
Units
o
R
θJA
V
F
--
--
C/W
V
*Valid provided that leads at a distance of 10mm from case are kept at ambient temperature.
September 6,2016-REV.09
PAGE . 1
1N4728A-G SERIES
Nomi na l Ze ne r Volta g e
Part Number
No m. V
1 Watt Zener Diodes
1N4728A-G
1N4729A-G
1N4730A-G
1N4731A-G
1N4732A-G
1N4733A-G
1N4734A-G
1N4735A-G
1N4736A-G
1N4737A-G
1N4738A-G
1N4739A-G
1N4740A-G
1N4741A-G
1N4742A-G
1N4743A-G
1N4744A-G
1N4745A-G
1N4746A-G
1N4747A-G
1N4748A-G
1N4749A-G
1N4750A-G
1N4751A-G
1N4752A-G
1N4753A-G
1N4754A-G
1N4755A-G
1N4756A-G
1N4757A-G
1N4758A-G
1N4759A-G
1N4760A-G
1N4761A-G
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
3.14
3.42
3.71
4.09
4.47
4.85
5.32
5.89
6.46
7.13
7.79
8.65
9.5
10.45
11.4
12.35
14.25
15.2
17.1
19
20.9
22.8
25.65
28.5
31.35
34.2
37.05
40.85
44.65
48.45
53.2
58.9
64.6
71.25
3.47
3.78
4.1
4.52
4.94
5.36
5.88
6.51
7.14
7.88
8.61
9.56
10.5
11.55
12.6
13.65
15.75
16.8
18.9
21
23.1
25.2
28.35
31.5
34.65
37.8
40.95
45.15
49.35
53.55
58.8
65.1
71.4
78.75
10
10
9
9
8
7
5
2
3.5
4
4.5
5
7
8
9
10
14
16
20
22
23
25
35
40
45
50
60
70
80
95
110
125
150
175
V
Z
@ I
ZT
Mi n. V
Max. V
Ω
Max. Ze ner Impe d a nc e
Z
ZT
@ I
ZT
mA
Ω
Z
ZK
@ I
ZK
mA
Ma xi mum Leakage Current
I
R
@V
R
μA
V
Marking
Code
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
6.5
6
5.5
5
4.5
4
3.7
3.3
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
1
1
1
1
1
1
1
1
1
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
100
100
50
10
10
10
10
10
5
5
5
0.5
0.5
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
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
1N4728A
1N4729A
1N4730A
1N4731A
1N4732A
1N4733A
1N4734A
1N4735A
1N4736A
1N4737A
1N4738A
1N4739A
1N4740A
1N4741A
1N4742A
1N4743A
1N4744A
1N4745A
1N4746A
1N4747A
1N4748A
1N4749A
1N4750A
1N4751A
1N4752A
1N4753A
1N4754A
1N4755A
1N4756A
1N4757A
1N4758A
1N4759A
1N4760A
1N4761A
September 6,2016-REV.09
PAGE . 2
1N4728A-G SERIES
FIGURE.3TYPICAL THERMAL RESISTANCE
versus LEAD LENGTH
FIGURE.4 EFFECT OF ZENER CURRENT
FIGURE.5 MAXIMUM SURGE POWER
FIGURE.6 EFFECT OF ZENER CURRENT ON ZENER IMPEDANCE
FIGURE.7 EFFECT OF ZENER VOLTAGE ON ZENER IMPEDANCE
September 6,2016-REV.09
PAGE . 4
1N4728A-G SERIES
Vz, ZENER VOLTAGE (VOLTS)
FIGURE.9 TYPICAL CAPACITANCE versus Vz
FIGURE.8 TYPICAL LEAKAGE CURRENT
September 6,2016-REV.09
m
FIGURE.10 TYPICAL FORWARD CHARACTERISTICS
PAGE . 5
stm32/stm8
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