R
S E M I C O N D U C T O R
1W SILICON PLANAR ZENER DIODES
DO-41(GLASS)
FEATURES
Silicon planar power zener diodes
For use in stabilizing and clipping circuits with high power rating.
Standards Zener voltage tolerance is 10%.
Add suffix "A" for
request
5% tolerance Other tolerance available upon
0.102(2.6)
MAX
DIA
1.102(28)
MIN
0.161(4.1)
MAX
MECHANICAL DATA
Case
:
DO-41
glass case
Weight
:
Approx. 0.35 gram
0.034(0.86)
MAX
DIA
1.102(28)
MIN
Dimensions in inches and (millimeters)
ABSOLUTE MAXIMUM RATINGS(LIMITING VALUES)
(T
A
=25 C)
Zener current see table "Characteristics"
Power dissipation at T
A
=25 C
Junction temperature
Storage temperature range
P
tot
T
J
T
STG
1
1)
175
-65 to+175
mW
C
C
1) Valid provided that a distance of 8mm from case are kept at ambient temperature
ELECTRICAL CHARACTERISTICS
(T
A
=25 C)
Thermal resistance junction to ambient air
Forward voltage at I
F
=200mA
R
thA
V
F
170
1)
1.2
C /W
V
1) Valid provided that a distance of 8mm from case are kept at ambient temperature
Nominal
Zener
3)
Voltage
Test
Current
1)
Surge
current
Maximum
regulator
Current
2)
1N4728
1N4729
1N4730
1N4731
1N4732
1N4733
1N4734
1N4735
1N4736
1N4737
1N4738
1N4739
1N4740
1N4741
1N4742
1N4743
1N4744
1N4745
1N4746
1N4747
1N4748
1N4749
1N4750
1N4751
1N4752
1N4753
1N4754
1N4755
1N4756
1N4757
1N4758
1N4759
1N4760
1N4761
1N4762
1N4763
1N4764
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
11
12
13
15
16
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
75
82
91
100
76
69
64
58
53
49
45
41
37
34
31
28
25
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
4.5
4.0
3.7
3.3
3.0
2.8
2.5
10
10
9
9
8
7
5
2
3.5
4.0
4.5
5.0
7
8
9
10
14
16
20
22
23
25
35
40
45
50
60
70
80
95
110
125
150
175
200
250
350
3000
1500
1000
0.25
750
700
0.5
500
550
600
1.0
400
100
50
1.0
1.0
1.0
1.0
1.0
1.0
2.0
1380
1260
1190
1070
970
890
810
730
660
605
550
500
454
414
380
344
304
285
250
225
205
190
170
150
135
125
115
110
95
90
80
70
65
60
55
50
45
276
252
234
217
193
178
162
146
133
121
110
100
91
83
76
69
61
57
50
45
41
38
34
30
27
25
23
22
19
18
16
14
13
12
11
10
9
10
3.0
4.0
5.0
6.0
7.0
7.6
8.4
9.1
9.9
11.4
12.2
13.7
15.2
16.7
18.2
20.6
5
22.8
25.1
27.4
29.7
32.7
35.8
38.8
42.6
47.1
51.7
56.0
62.2
69.2
76.0
Notes: 1) The Zener impedance is derived from the 1KHz 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.
2) Valid provided that electrodes at a distance of 10mm from case are kept at ambient temperature
3) Measured under thermal equilibrium and DC test conditions.
Admissible power dissipation versus ambient temperature
(Valid provided that leads at a distance of 10mm from case
are kept at ambient temperature)
W
1.0
1N4728...1N4764
P
tot
0.8
0.6
0.4
0.2
0
0
100
T
amb
200 C
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