RECTRON
SEMICONDUCTOR
TECHNICAL SPECIFICATION
1N4728B
THRU
1N4757B
1W 5% DO-41 ZENER DIODE
Absolute Maximun Ratings (Ta=25
o
C)
Items
Power Dissipation
Power Derating
(above 50
o
C)
Forward Voltage
@If = 200 mA
Vz Tolerence
Junction Temp.
Storage Temp.
Symbol
P
TOT
Ratings
1.0
6.67
Vf
1.5
5
-65 to 175
-65 to 175
Unit
W
mW/
o
C
V
%
o
C
o
C
27.9 MIN
0.71
0.87
DIA
.
Dimensions
DO-41
T
J
T
STG
4.06
5.51
Mechanical Data
Items
P a cka g e
C a se
Lead/Fi ni sh
C hi p
Materi als
D O-41
Hermeti cally sealed glass
D ouble stud/Solder Plati ng
Glass Passi vated
2.03
2.72
DIA.
27.9 MIN
Dimensions in millimeters
Electrical Characteristics (Ta=25
o
C)
ZENER
VOLTAGE
TYPE
Vz(V)
1N4728A
1N4729A
1N4730A
1N4731A
1N4732A
1N4733A
1N4734A
1N4735A
1N4736A
1N4737A
1N4738A
1N4739A
1N4740A
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
@Izt(mA)
76
69
64
58
53
49
45
41
37
34
31
28
25
Rz (ohms)
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
@Izt(mA) Rz (ohms)
76
69
64
58
53
49
45
41
37
34
31
28
25
400
400
400
400
500
550
600
700
700
700
700
700
700
@Izt(mA)
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
MAX ZENER
IMPEDANCE
MAX ZENER
IMPEDANCE
MAXIMUM
REVERSE
CURRENT
TEMP.
COEFF.
dvz
@VR (V)
1.0
1.0
1.0
1.0
1.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
7.6
IR (uA)
100
100
50
10
10
10
10
10
10
10
10
10
10
(%/
o
C)
-0.06
-0.06
-0.05
-0.03
-0.01
0.01
0.03
0.04
0.05
0.05
0.06
0.06
0.07
Electrical Characteristics (Ta=25
o
C)
ZENER
VOLTAGE
TYPE
Vz(V)
1N4741A
1N4742A
1N4743A
1N4744A
1N4745A
1N4746A
1N4747A
1N4748A
1N4749A
1N4750A
1N4751A
1N4752A
1N4753A
1N4754A
1N4755A
1N4756A
1N4757A
Notes:
1. Rectangular waveform (tp= 10 ms)
MAX ZENER
IMPEDANCE
MAX ZENER
IMPEDANCE
Izt = 0.25mA
MAXIMUM
REVERSE
CURRENT
TEMP.
COEFF.
dvz
@Izt(mA)
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
Rz (ohms) @Izt(mA)
8
9
10
14
16
20
22
23
25
35
40
45
50
60
70
80
95
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
Rz (ohms)
700
700
700
700
700
750
750
750
750
750
1000
1000
1000
1000
1500
1500
1500
@VR (V)
8.4
9.1
9.9
11.4
12.2
13.7
15.2
16.7
18.2
20.6
22.6
25.1
27.4
29.7
32.7
35.8
38.8
IR (uA)
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
(%/
o
C)
0.07
0.07
0.07
0.08
0.08
0.08
0.08
0.08
0.08
0.09
0.09
0.09
0.09
0.09
0.09
0.09
0.09
11
12
13
15
16
18
20
22
24
27
30
33
36
39
43
47
51
