1N4728A 1N4764A
1 of 3 2002 Won-Top Electronics
1N4728A 1N4764A
1.0W ZENER DIODE
Features
!
Planar Die Construction
!
1.0 Watt Power Dissipation
!
3.3 100V Nomimal Zener Voltage A B A
!
5% Standard Vz Tolerance
!
Low
Inductance
!
Typical
I
R
Less Than 5.0A Above 11V
!
Plastic Case Material Has UL Flammability
Classification Rating 94V-O C
D
Mechanical Data
!
Case: DO-41 Glass Case
!
Terminals: Axial Leads, Solderable per
MIL-STD-202, Method 208
!
Polarity:
Cathode
Band
!
Marking: Type Number
!
Weight: 0.35 grams (approx.)
Maximum Ratings
@T
A
=25C unless otherwise specified
Characteristic
Symbol
Value
Unit
Peak Pulse Power Dissipation at T
A
= 50C (Note 1)
Derate above 50C
P
d
1.0
6.67
W
mW/C
Peak Forward Surge Current (Note 2)
I
FSM
10
A
Forward Voltage @ I
F
= 200mA
V
F
1.2
V
Operating and Storage Temperature Range
T
j
, T
STG
-65 to +150
C
Note: 1. Mounted on 5.0mm
2
(0.013mm thick) land area.
2. Measured on 8.3ms single half sine-wave duty cycle = 4 pulses per minutes maximum.
WTE
POWER SEMICONDUCTORS
DO-41 GLASS
Dim
Min
Max
A
28.0
--
B
--
4.1
C
0.71
0.86
D
2.00
2.6
All Dimensions in mm
1N4728A 1N4764A
2 of 3 2002 Won-Top Electronics
Electrical Characteristics
@T
A
=25C unless otherwise specified
Nominal Zener
Voltage (Note 2)
Test Current
Maximum Zener Impedance (Note 3)
Leakage Current
Max Surge
Current
8.3ms
V
Z
@ I
ZT
I
ZT
Z
ZT
@ I
ZT
Z
ZK
@ I
ZK
I
ZK
I
R
@ V
R
I
ZS
Type
Number
(Note 1)
(V)
(mA)
(
)
(
)
(mA)
(A)
(V)
(mA)
1N4728A
1N4729A
1N4730A
1N4731A
1N4732A
3.3
3.6
3.9
4.3
4.7
76
69
64
58
53
10
10
9.0
9.0
8.0
400
400
400
400
500
1.0
1.0
1.0
1.0
1.0
100
100
50
10
10
1.0
1.0
1.0
1.0
1.0
1380
1260
1190
1070
970
1N4733A
1N4734A
1N4735A
1N4736A
1N4737A
5.1
5.6
6.2
6.8
7.5
49
45
41
37
34
7.0
5.0
2.0
3.5
4.0
550
600
700
700
700
1.0
1.0
1.0
1.0
0.5
10
10
10
10
10
1.0
2.0
3.0
4.0
5.0
890
810
730
660
605
1N4738A
1N4739A
1N4740A
1N4741A
1N4742A
8.2
9.1
10
11
12
31
28
25
23
21
4.5
5.0
7.0
8.0
9.0
700
700
700
700
700
0.5
0.5
0.25
0.25
0.25
10
10
10
5.0
5.0
6.0
7.0
7.6
8.4
9.1
550
500
454
414
380
1N4743A
1N4744A
1N4745A
1N4746A
1N4747A
13
15
16
18
20
19
17
15.5
14
12.5
10
14
16
20
22
700
700
700
750
750
0.25
0.25
0.25
0.25
0.25
5.0
5.0
5.0
5.0
5.0
9.9
11.4
12.2
13.7
15.2
344
304
285
250
225
1N4748A
1N4749A
1N4750A
1N4751A
1N4752A
22
24
27
30
33
11.5
10.5
9.5
8.5
7.5
23
25
35
40
45
750
750
750
1000
1000
0.25
0.25
0.25
0.25
0.25
5.0
5.0
5.0
5.0
5.0
16.7
18.2
20.6
22.8
25.1
205
190
170
150
135
1N4753A
1N4754A
1N4755A
1N4756A
1N4757A
36
39
43
47
51
7.0
6.5
6.0
5.5
5.0
50
60
70
80
95
1000
1000
1500
1500
1500
0.25
0.25
0.25
0.25
0.25
5.0
5.0
5.0
5.0
5.0
27.4
29.7
32.7
35.8
38.8
125
115
110
95
90
1N4758A
1N4759A
1N4760A
1N4761A
1N4762A
56
62
68
75
82
4.5
4.0
3.7
3.3
3.0
110
125
150
175
200
2000
2000
2000
2000
3000
0.25
0.25
0.25
0.25
0.25
5.0
5.0
5.0
5.0
5.0
42.6
47.1
51.7
56.0
62.2
80
70
65
60
55
1N4763A
1N4764A
91
100
2.8
2.5
250
350
3000
3000
0.25
0.25
5.0
5.0
69.2
76.0
50
45
Note: 1. Type numbers listed have standard tolerance on the nominal zener voltage of 5%.
2. Measured under thermal equilibrium and DC (I
ZT
) test conditions.
3. The Zener impedance is derived from the 60Hz 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.
1N4728A 1N4764A
3 of 3 2002 Won-Top Electronics
ORDERING INFORMATION
Product No.
!
!
!
!
Package Type
Shipping Quantity
1N47xxA-T3
DO-41 Glass
5000/Tape & Reel
1N47xxA-TB
DO-41 Glass
5000/Tape & Box
1N47xxA
DO-41 Glass
1000 Units/Box
Products listed in bold are WTE Preferred devices.
!
T3 suffix refers to a 13" reel. TB suffix refers to Ammo Pack.
Shipping quantity given is for minimum packing quantity only. For minimum order
quantity, please consult the Sales Department.
Won-Top Electronics Co., Ltd (WTE) has checked all information carefully and believes it to be correct and accurate. However, WTE cannot assume any
responsibility for inaccuracies. Furthermore, this information does not give the purchaser of semiconductor devices any license under patent rights to
manufacturer. WTE reserves the right to change any or all information herein without further notice.
WARNING: DO NOT USE IN LIFE SUPPORT EQUIPMENT. WTE power semiconductor products are not authorized for use as critical components in life
support devices or systems without the express written approval.
We power your everyday.
Won-Top Electronics Co., Ltd.
No. 44 Yu Kang North 3rd Road, Chine Chen Dist., Kaohsiung, Taiwan
Phone: 886-7-822-5408 or 886-7-822-5410
Fax: 886-7-822-5417
Email: sales@wontop.com
Internet: http://www.wontop.com
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