June 2007
1N4728A - 1N4758A
Zener Diodes
Tolerance = 5%
DO-41 Glass case
COLOR BAND DENOTES CATHODE
Absolute Maximum Ratings *
T
= 25°C unless otherwise noted
a
Symbol
Parameter
Value
Units
PD
Power Dissipation
1.0
W
@ TL ≤ 50°C, Lead Length = 3/8”
Derate above 50°C
6.67
mW/°C
°C
TJ, TSTG
Operating and Storage Temperature Range
-65 to +200
* These ratings are limiting values above which the serviceability of the diode may be impaired.
Electrical Characteristics
T
= 25°C unless otherwise noted
a
V (V) @ I (Note 1)
Max. Zener Impedance
Leakage Current
Z
Z
Test Current
Device
Z @ I
Z
I
@
I
I
V
R
Z
Z
ZK
ZK
R
I (mA)
Min.
Typ.
Max.
Z
(Ω)
(Ω)
(mA)
(μA)
(V)
ZK
1N4728A
1N4729A
1N4730A
1N4731A
1N4732A
3.315
3.42
3.705
4.085
4.465
3.3
3.6
3.9
4.3
4.7
3.465
3.78
4.095
4.515
4.935
76
69
64
58
53
10
10
9
9
8
400
1
1
1
1
1
100
100
50
10
10
1
1
1
1
1
400
400
400
500
1N4733A
1N4734A
1N4735A
1N4736A
1N4737A
4.845
5.32
5.89
6.46
7.125
5.1
5.6
6.2
6.8
7.5
5.355
5.88
6.51
7.14
7.875
49
45
41
37
34
7
5
2
3.5
4
550
600
700
700
700
1
1
1
1
0.5
10
10
10
10
10
1
2
3
4
5
1N4738A
1N4739A
1N4740A
1N4741A
1N4742A
7.79
8.645
9.5
10.45
11.4
8.2
9.1
10
11
8.61
9.555
10.5
11.55
12.6
31
28
25
23
21
4.5
5
7
8
9
700
700
700
700
700
0.5
0.5
0.25
0.25
0.25
10
10
10
5
6
7
7.6
8.4
9.1
12
5
©2007 Fairchild Semiconductor Corporation
1N4728A - 1N4758A Rev. H1
1
www.fairchildsemi.com