SENSITRON
SEMICONDUCTOR
TECHNICAL DATA
DATA SHEET 4239, Rev-
1N4478 to 1N4494
1N4478U to 1N4494U
Zener 1.5W DIODE
SENSITRON`s Power Semiconductor Products have been used in space, military and high-rel applications for
more than 30 years. Our 1.5W silicon, low leakage, voltage regulator diodes are available in both leaded axial and
surface mount melf packaging. We also supply 1.5W Zener die products.
Applications / Markets:
▼Voltage
regulation and voltage limiting
▼Voltage
regulation over a broad operating range
▼Low
power protection
▼Analog
Circuits
▼High-Rel
Industrial
▼Military
▼Aerospace
▼
Space/satellites
Features / Benefits:
▼Ultra-low
reverse leakage current
▼
Sharp Zener knee
▼Zener
voltage available from 36V to 160V
▼
Hermetic, non-cavity glass package
▼
Metallurgically bonded
▼
Extensive line of QPL Products
▼
Screening to TX/TXV/S level
▼
Tape & reel available
Electrical characteristics – Temperature 25
o
C unless otherwise noted
Part #
Vz
Nom
Vz
Min
Vz
Max
V
37.8
40.9
45.1
49.3
53.5
58.8
65.1
71.4
78.8
86.1
95.5
105.0
115.5
126.0
136.5
157.5
168
Iz test
current
mA
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.7
3.3
3.0
2.8
2.5
2.3
2.0
1.9
1.7
1.6
Zz
imped
ance
Ω
27
30
40
50
60
70
80
100
130
160
200
250
300
400
500
700
1000
Zk
Knee
impedance
Ω
850
900
950
1000
1100
1300
1500
1700
2000
2500
3000
3100
4000
4500
5000
6000
6500
Iz Max
dc
current
mA
40
37
33
30
28
26
23
21
19
17
16
14
13
12
11
9.5
8.9
Voltage
regulation
V
1.7
1.8
1.9
2.1
2.3
2.5
2.7
3.0
3.3
3.6
4.0
4.4
5.0
5.5
6.0
7.0
8.0
Izsm
Reverse
Voltage
V
28.8
31.2
34.4
37.6
40.8
44.8
49.6
54.4
60.0
65.6
72.8
80.0
88.0
96.0
104
120
128
IR
Reverse
Current
Dc
Ir1
µA
.05
.05
.05
.05
.05
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
αVZ
Temp
coeffi
cient
%/
o
C
0.093
0.094
0.095
0.095
0.096
0.096
0.097
0.097
0.098
0.098
0.099
0.100
0.100
0.100
0.100
0.100
0.100
IZK
Test
current
mA
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
IR
2
Reverse
current*
µA
2
2
2
2
2
10
10
10
10
10
10
10
10
10
10
10
10
V
V
1N4478
36
34.2
1N4479
39
37.1
1N4480
43
40.9
1N4481
47
44.7
1N4482
51
48.5
1N4483
56
53.2
1N4484
62
58.9
1N4485
68
64.6
1N4486
75
71.3
1N4487
82
77.9
1N4488
91
86.5
1N4489
100
95.0
1N4490
110
104.5
1N4491
120
114.0
1N4492
130
123.5
1N4493
150
142.5
1N4494
160
152
o
*
Dc TA=+150 C IR2
A
.40
.37
.33
.30
.28
.26
.23
.21
.19
.17
.16
.14
.13
.12
.11
.095
.089
•
221 West Industry Court
Deer Park, NY 11729-4681
(631) 586-7600 FAX (631) 242-9798
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World Wide Web Site - http://www.sensitron.com
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E-Mail Address - sales@sensitron.com
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