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SILICON ZENER DIODE
FEATURES
Low profile package
Built-in strain relief
Low inductance
High temperature soldering : 260°C /10
seconds at terminals
Glass package has Underwriters
Laboratory Flammability Classification
In compliance with EU RoHS
2002/95/EC directives
APPLICATIONS
Case: Molded Glass DO-41G
Terminals: Axial leads, solderable per
MIL-STD-750, Method 2026 guaranteed
Polarity: Color band denotes positive end
Mounting position:Any
Weight: 0.012 ounce, 0.336 gram
1N4728A-G thru 1N4764A-G
REVERSE VOLTAGE - 3.3 to 100 Volts
FORWARD CURRENT - 1.0 Watts
DO-41G
Dimensions in inches and (millimeters)
Ratings at 25°C ambient temperature unless otherwise specified.
Parameter
Symbol
Power Dissipation at Tamb=25
Ptot
Junction Temperature
Tj
Storage Temperature Range
Tstg
*Valid provided that leads at a distance of 10mm from case are kept at ambient temperature.
Value
1*
150
-65 ~ +200
Units
W
Parameter
Symbol
Min.
Typ.
Thermal Resistance Junction Ambient Air
RθJA
-
-
Forward Voltage at IF=200mA
VF -
-
*Valid provided that leads at a distance of 10mm from case are kept at ambient temperature.
Max.
170*
1.2
Units
K/W
V

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RATING AND CHARACTERISTIC CURVES
1N4728A-G thru 1N4764A-G
NOTE:
1. Tolerance and Type Number Designation. The type umbers listed have a standard tolerance on the nominal zener voltage of + 5%
2. Specials Available Include:
A. Nominal zener voltages between the voltages shown and tighter voltage tolerances.
B. Matched sets.
3. Zener Voltage (Vz) Measurement. Guarantees the zener voltage when measured at 90 seconds while maintaining the lead temperature (T )
at 30 C + 1 C, from the diode body.
4. Zener Impedance (Zz) Derivation. The zener impedance is derived from the 60 cycle ac voltage, which results when an ac current having
an rms value equal to 10% of the dc zener current (Izt or Izk) is superimposed on Izt or Izk.
5. Surge Current (Ir) Non-Repetitive. The rating listed in the electrical characteristics table is maximum peak,non-repetitive, reverse surge current
of 1/2
FIG. 1 - POWER TEMPERATURE DERATING CURVE
FIG.2 - TEMPERATURE COEFFICIENTS
(-55°C to +150°C temperature range;90% of the units are in the ranges indicated.)

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FIG. 3 - TYPICAL THERMAL RESISTANCE versus LEAD LENGTH
RATING AND CHARACTERISTIC CURVES
1N4728A-G thru 1N4764A-G
FIG. 4 - EFFECT OF ZENER CURRENT
FIG. 5 - MAXIMUM SURGE POWER
FIG.6- EFFECT OF ZENER CURRENT ON ZENER IMPEDANCE
FIG. 7 - EFFECT OF ZENER VOLTAGE ON ZENER

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RATING AND CHARACTERISTIC CURVES
1N4728A-G thru 1N4764A-G
FIG. 8 - TYPICAL LEAKAGE CURRENT
FIG. 9 - TYPICAL CAPACITANGE versus Vz
FIG. 10 - TYPICAL FORWAWD CHARACTERISTICS

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1N4728A-G thru 1N4764A-G
TYPE
1.0 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
1N4762A-G
1N4763A-G
1N4764A-G
Nominal Zener Voltage
Nom.V
VZ @ IZT
Min.V
Max.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
10.0
11.0
12.0
13.0
15.0
16.0
18.0
20.0
22.0
24.0
27.0
30.0
33.0
36.0
39.0
43.0
47.0
51.0
56.0
62.0
68.0
75.0
82.0
91.0
100.0
3.14
3.42
3.71
4.09
4.47
4.85
5.32
5.89
6.46
7.13
7.79
8.65
9.50
10.45
11.40
12.35
14.25
15.20
17.10
19.00
20.90
22.80
25.65
28.50
31.35
34.20
37.05
40.85
44.65
48.45
53.20
58.90
64.60
71.25
77.90
86.45
95.00
3.47
3.78
4.10
4.52
4.94
5.36
5.88
6.51
7.14
7.88
8.61
9.56
10.50
11.55
12.60
13.65
15.75
16.80
18.90
21.00
23.10
25.20
28.35
31.50
34.65
37.80
40.95
45.15
49.35
53.55
58.80
65.10
71.40
78.75
86.10
95.55
105.00
Max. Zener Impedance
ZZT @ IZT
Ω mA
ZZT @ IZK
Ω mA
10.0
10.0
9.0
9.0
8.0
7.0
5.0
2.0
3.5
4.0
4.5
5.0
7.0
8.0
9.0
10.0
14.0
16.0
20.0
22.0
23.0
25.0
35.0
40.0
45.0
50.0
60.0
70.0
80.0
95.0
110.0
125.0
150.0
175.0
200.0
250.0
350.0
76.00
69.00
64.00
58.00
53.00
49.00
45.00
41.00
37.00
34.00
31.00
28.00
25.00
23.00
21.00
19.00
17.00
15.50
14.00
12.50
11.50
10.50
9.50
8.50
7.50
7.00
6.50
6.00
5.50
5.00
4.50
4.00
3.70
3.30
3.00
2.80
2.50
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
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.50
0.50
0.50
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
Maximum Leakage
Current
IR @ VR
μA V
Marking
Code
100 1.0 1N4728A
100 1.0 1N4729A
50 1.0 1N4730A
10 1.0 1N4731A
10 1.0 1N4732A
10 1.0 1N4733A
10 2.0 1N4734A
10 3.0 1N4735A
10 4.0 1N4736A
10 5.0 1N4737A
10 6.0 1N4738A
10 7.0 1N4739A
10 7.6 1N4740A
5 8.4 1N4741A
5 9.1 1N4742A
5 9.9 1N4743A
5 11.4 1N4744A
5 12.2 1N4745A
5 13.7 1N4746A
5 15.2 1N4747A
5 16.7 1N4748A
5 18.2 1N4749A
5 20.6 1N4750A
5 22.8 1N4751A
5 25.1 1N4752A
5 27.4 1N4753A
5 29.7 1N4754A
0.1 32.7 1N4755A
0.1 35.8 1N4756A
0.1 38.8 1N4757A
0.1 42.6 1N4758A
0.1 47.1 1N4759A
0.1 51.7 1N4760A
0.1 56.0 1N4761A
0.1 62.2 1N4762A
0.1 69.2 1N4763A
0.1 76.0 1N4764A