AiT Semiconductor Inc.
1SMA4728A-1SMA4777A
www.ait-ic.com
ZENER DIODES
1W 3.3V TO 330V SILICON PLANAR ZENER DIODES
REV1.0 - NOV 2022 RELEASED - - 1 -
DESCRIPTION
MECHANICAL DATA
The 1SMA4728A-1SMA4777A are available in SMA
Package.
⚫ Total power dissipation: Max. 1.0 W.
⚫ Wide Reverse Voltage Range 3.3V to 30V.
⚫ Small plastic package suitable for surface
mounted design.
Case: SMA
Terminals: Solderable per MIL-STD-750,
Method 2026
Approx. Weight: 0.055g / 0.002oz
ORDERING INFORMATION
PIN DESCRIPTION
Package Type
Part Number
SMA
1SMA4728A
1SMA4753A
1SMA4729A
1SMA4754A
1SMA4730A
1SMA4755A
1SMA4731A
1SMA4756A
1SMA4732A
1SMA4757A
1SMA4733A
1SMA4758A
1SMA4734A
1SMA4759A
1SMA4735A
1SMA4760A
1SMA4736A
1SMA4761A
1SMA4737A
1SMA4762A
1SMA4738A
1SMA4763A
1SMA4739A
1SMA4764A
1SMA4740A
1SMA4765A
1SMA4741A
1SMA4766A
1SMA4742A
1SMA4767A
1SMA4743A
1SMA4768A
1SMA4744A
1SMA4769A
1SMA4745A
1SMA4770A
1SMA4746A
1SMA4771A
1SMA4747A
1SMA4772A
1SMA4748A
1SMA4773A
1SMA4749A
1SMA4774A
1SMA4750A
1SMA4775A
1SMA4751A
1SMA4776A
1SMA4752A
1SMA4777A
Note
SPQ: 5,000pcs/Reel
AiT provides all RoHS Compliant Products
AiT Semiconductor Inc.
1SMA4728A-1SMA4777A
www.ait-ic.com
ZENER DIODES
1W 3.3V TO 330V SILICON PLANAR ZENER DIODES
REV1.0 - NOV 2022 RELEASED - - 2 -
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise specified.
Parameter
Symbol
Value
Unit
Power Dissipation at T
C
=75 ℃
P
D
1
W
Forward Voltage at I
F
= 200 mA
V
F
1.2
V
Junction Temperature
T
J
150
℃
Storage Temperature Range
T
stg
-55 to 150
℃
Stresses above may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these
or any other conditions beyond those indicated in the Electrical Characteristics are not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
T
A
= 25°C, unless otherwise noted
Part Number
Zener Voltage Range (V)*
Dynamic
Impedance
Reverse Current
Admissible
Zener Current
V
ZT
(at l
ZT
)
l
ZT
Z
ZT
(at I
ZT
)
I
R
at V
R
Min.
Nom.
Max.
(mA)
Max.(Ω)
Max (μA)
V
I
ZM
(mA)
1SMA4728A
3.10
3.3
3.50
75
10
100
1
285
1SMA4729A
3.40
3.6
3.80
69
10
100
1
263
1SMA4730A
3.70
3.9
4.10
64
9.0
50
1
243
1SMA4731A
4.06
4.3
4.56
58
9.0
25
1
219
1SMA4732A
4.50
4.7
4.93
53
8.0
10
1
203
1SMA4733A
4.84
5.1
5.36
49
7.0
10
1
186
1SMA4734A
5.32
5.6
5.92
45
5.0
10
2
170
1SMA4735A
5.86
6.2
6.51
41
2.0
10
3
154
1SMA4736A
6.46
6.8
7.18
37
3.5
10
4
140
1SMA4737A
7.12
7.5
7.88
34
4.0
10
5
127
1SMA4738A
7.79
8.2
8.67
31
4.5
10
6
116
1SMA4739A
8.60
9.1
9.59
28
5.0
10
7
104
1SMA4740A
9.50
10
10.5
25
7.0
10
7
95
1SMA4741A
10.4
11
11.6
23
8.0
5
8
86
1SMA4742A
11.4
12
12.6
21
9.0
5
9
79
1SMA4743A
12.4
13
14.1
19
10
5
10
71
1SMA4744A
13.8
15
15.8
17
14
5
11
63
1SMA4745A
15.2
16
17.1
16
16
5
12
58
* V
ZT
is tested with pulses(20ms)