DS18007 Rev. 13 - 2
1 of 3
1N4728A-1N4764A
www.diodes.com
1N4728A - 1N4764A
1.0W ZENER DIODE
Features
Characteristic
Symbol
Value
Unit
Zener Current (see Table page 2)
I
Z
Pd / V
Z
mA
Power Dissipation
Derate Above 50C
(Note 1)
P
d
1.0
6.67
W
mW/C
Thermal Resistance - Junction to Ambient Air
R
qJA
175
C/W
Forward Voltage @ I
F
= 200 mA
V
F
1.2
V
Operating and Storage Temperature Range
T
j
, T
STG
-65 to + 200
C
Note:
1. Valid provided that leads are kept at T
L
@ 50
C with lead length = 9.5mm (3/8") from case.
Maximum Ratings
@ T
A
= 25C unless otherwise specified
Mechanical Data
1.0 Watt Power Dissipation
3.3V - 100V Nominal Zener Voltage
Standard V
Z
Tolerance is 5%
Case: DO-41, Glass
Terminals: Solderable per MIL-STD-202,
Method 208
Polarity: Cathode Band
Marking: Type Number
Approx. Weight: 0.35 grams
A
A
B
C
D
DO-41 Glass
Dim
Min
Max
A
25.40
--
B
--
4.70
C
--
0.863
D
--
2.71
All Dimensions in mm
DS18007 Rev. 13 - 2
2 of 3
1N4728A-1N4764A
www.diodes.com
Type
Number
Nominal Zener
Voltage (Note 2)
Test
Current
Maximum Zener Impedance
(Note 3)
Maximum Reverse
Leakage Current
Max Surge
Current
8.3ms
Temperature
Coefficient
@ I
ZT
V
Z
@ I
ZT
I
ZT
Z
ZT
@ I
ZT
Z
ZK
@ I
ZK
I
ZK
I
R
@ V
R
I
ZS
(V)
(mA)
(
W)
(
W)
(mA)
(A)
(V)
(mA)
%/C
1N4728A
3.3
76
10
400
1.0
100
1.0
1380
-0.08 to -0.05
1N4729A
3.6
69
10
400
1.0
100
1.0
1260
-0.08 to -0.05
1N4730A
3.9
64
9.0
400
1.0
50
1.0
1190
-0.07 to -0.02
1N4731A
4.3
58
9.0
400
1.0
10
1.0
1070
-0.07 to -0.01
1N4732A
4.7
53
8.0
500
1.0
10
1.0
970
-0.03 to +0.04
1N4733A
5.1
49
7.0
550
1.0
10
1.0
890
-0.01 to +0.04
1N4734A
5.6
45
5.0
600
1.0
10
2.0
810
0 to +0.045
1N4735A
6.2
41
2.0
700
1.0
10
3.0
730
+0.01 to +0.055
1N4736A
6.8
37
3.5
700
1.0
10
4.0
660
+0.015 to +0.06
1N4737A
7.5
34
4.0
700
0.5
10
5.0
605
+0.02 to +0.065
1N4738A
8.2
31
4.5
700
0.5
10
6.0
550
0.03 to 0.07
1N4739A
9.1
28
5.0
700
0.5
10
7.0
500
0.035 to 0.075
1N4740A
10
25
7.0
700
0.25
10
7.6
454
0.04 to 0.08
1N4741A
11
23
8.0
700
0.25
5.0
8.4
414
0.045 to 0.08
1N4742A
12
21
9.0
700
0.25
5.0
9.1
380
0.045 to 0.085
1N4743A
13
19
10
700
0.25
5.0
9.9
344
0.05 to 0.085
1N4744A
15
17
14
700
0.25
5.0
11.4
304
0.055 to 0.09
1N4745A
16
15.5
16
700
0.25
5.0
12.2
285
0.055 to 0.09
1N4746A
18
14
20
750
0.25
5.0
13.7
250
0.06 to 0.09
1N4747A
20
12.5
22
750
0.25
5.0
15.2
225
0.06 to 0.09
1N4748A
22
11.5
23
750
0.25
5.0
16.7
205
0.06 to 0.095
1N4749A
24
10.5
25
750
0.25
5.0
18.2
190
0.06 to 0.095
1N4750A
27
9.5
35
750
0.25
5.0
20.6
170
0.06 to 0.095
1N4751A
30
8.5
40
1000
0.25
5.0
22.8
150
0.06 to 0.095
1N4752A
33
7.5
45
1000
0.25
5.0
25.1
135
0.06 to 0.095
1N4753A
36
7.0
50
1000
0.25
5.0
27.4
125
0.06 to 0.095
1N4754A
39
6.5
60
1000
0.25
5.0
29.7
115
0.06 to 0.095
1N4755A
43
6.0
70
1500
0.25
5.0
32.7
110
0.06 to 0.095
1N4756A
47
5.5
80
1500
0.25
5.0
35.8
95
0.06 to 0.095
1N4757A
51
5.0
95
1500
0.25
5.0
38.8
90
0.06 to 0.095
1N4758A
56
4.5
110
2000
0.25
5.0
42.6
80
0.06 to 0.095
1N4759A
62
4.0
125
2000
0.25
5.0
47.1
70
0.06 to 0.095
1N4760A
68
3.7
150
2000
0.25
5.0
51.7
65
0.06 to 0.095
1N4761A
75
3.3
175
2000
0.25
5.0
56.0
60
0.06 to 0.095
1N4762A
82
3.0
200
3000
0.25
5.0
62.2
55
1N4763A
91
2.8
250
3000
0.25
5.0
69.2
50
1N4764A
100
2.5
350
3000
0.25
5.0
76.0
45
Notes:
2. Measured under thermal equilibrium and dc (I
ZT
) test conditions.
3. 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 (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.
Electrical Characteristics
@ T
A
= 25C unless otherwise specified
DS18007 Rev. 13 - 2
3 of 3
1N4728A-1N4764A
www.diodes.com
0
0.2
0.4
0.6
0.8
1.0
0
40
80
120
160
200
P
,
T
O
T
A
L
P
OWER
D
ISSIP
A
TION
(W)
d
T , AMBIENT TEMPERATURE
A
Fig.1 Power Dissipation vs Ambient Temperature
0
250
0
5
15
20
25
30
l, Lead Length (mm)
Fig. 2 Typical Thermal Resistance vs. Lead Length
10
200
50
100
150
1
10
100
1000
1
10
100
V , ZENER VOLTAGE (V)
Z
Fig. 4 Typical Zener Impedance vs. Zener Voltage
I = 1mA
Z
2mA
10mA
20mA
5mA
1
10
100
1000
0
10
20
30
40
50
60
C
,
DIODE
C
AP
ACIT
ANCE
(pF)
j
V , ZENER VOLTAGE (V)
Z
Fig.3, Junction Capacitance vs Zener Voltage
f = 1MHz
T = 25C
A
V = 0V
R
V = 2V
R
V = 5V
R
V = 20V
R
V = 30V
R
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