1N4728 thru 1N4756
V
Z
Range: 3.3 to
47
Volts
Zener Diodes
Power Dissipation: 1.0W
Features
Silicon Planar Power Zener Diodes.
For use in stabilizing and clipping circuits with high power
rating.
Standard Zener voltage tolerance is
±
10%. Add suffix "A" for
±
5% tolerance. Other Zener voltages and tolerances are
available upon request.
These diodes are also available in the MELF case with type
designation ZM4728 thru ZM4764
For bidirectional product, contact local Technical Sales office.
Mechanical Data
Case: DO-41 Glass or DO-41 Plastic Case
Weight: approx. 0.35g
Note:
Suffix: “-P” to order Molded Plastic Package
Suffix: “-G” to order Molded Glass Package
Maximum Ratings and Thermal Characteristics
(Ratings at 25
o
C ambient temperature unless otherwise specified.)
Parameter
Zener current
Power dissipation at T
amb
=50
o
C
Thermal resistance junction to ambient air
Junction temperature
Storage temperature range
P
tot
R
θ
JA
T
j
T
S
Symbol
Value
See Next Page
1.0
170
(1)
Unit
W
o
(1)
C/W
o
175
-65 to +175
C
C
o
Notes:
1. Valid provided that electrodes at a distance of 10mm from case are kept at ambient temperature.
543
Electrical Characteristics
(T
A
=25
o
C unless otherwise noted)
Maximum V
F
=1.2V at I
F
=200mA
Type
number
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
Nominal
zener
voltage
(3)
at I
ZT
V
Z
(Volts)
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
Test
current
Maximum zener impedance
Z
ZT
at I
ZT
(Ω)
Ω
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
Z
ZK
(Ω)
Ω
400
400
400
400
500
550
600
700
700
700
700
700
700
700
700
700
700
700
750
750
750
750
750
1000
1000
1000
1000
1500
1500
(1)
Maximum reverse
leakage current
I
R
(uA)
100
100
50
10
10
10
10
10
10
10
10
10
10
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
at V
R
(Volts)
1
1
1
1
1
1
2
3
4
5
6
7
7.6
8.4
9.1
9.9
11.
12.2
13.7
15.2
16.7
18.2
20.
22.
25.1
27.
29.
32.
35.
Surge
current
at
T
A
=25
o
C
I
R
(mA)
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
I
ZT
(mA)
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
at
I
ZK
(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
0.25
0.25
0.25
0
0.25
0.25
0.25
0.25
0.25
0.25
0
0.25
0
0.25
0.25
0
0.25
0
0.25
0
0.25
0
0.25
Maximum
regulator
current
(2)
at
T
A
=50
o
C
I
ZM
(mA)
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
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 10 mm from case are kept at ambient temperature
3. Measured under thermal equilibrium and DC test conditions
544
Microchip MCU
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