1SMA4728AG THRU 1SMA4777AG
Silicon Planar Zener Diodes
PINNING
FEATURES
• Total power dissipation: Max. 1 W.
• Wide zener reverse voltage range 3.3V to 330V.
• Small plastic package suitable for surface mounted design.
MECHANICAL DATA
• Case: SMA
• Terminals: Solderable per MIL-STD-750, Method 2026
• A pprox. Weight: 0.055g / 0.002oz
Absolute Maximum Ratings And Characteristics
（
Ta = 25
°C）
Parameter
Power Dissipation at T
c
=75
°C
Forward Voltage at I
F
= 200 mA
Junction Temperature Range
Storage Temperature Range
PIN
1
2
DESCRIPTION
Cathode
Anode
2
1
Simplified outline SMA and symbol
Symbol
P
D
V
F
T
J
T
S
Value
1
1.2
- 55 to + 150
- 55 to + 150
Unit
W
V
°C
°C
Fig.1 Maximum Continuous Power Derating
1.2
1.0
Power Dissipation (
W
)
0.8
0.6
0.4
0.2
0.0
25
50
75
100
125
150
175
T
c
,Case Temperature (
°C)
REV.08
1 of 3
Characteristics at Ta = 25°C
Zener Voltage Range
（1）
Dynamic
Impedance
Reverse Current
I
R
Max（μA）
100
100
50
25
10
10
10
10
10
10
10
10
10
5
5
5
5
5
5
5
5
5
5
5
5
5
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
at V
R
（V）
1
1
1
1
1
1
2
3
4
5
6
7
7
8
9
10
11
12
13
15
17
18
21
23
25
27
30
32
35
38
42
47
52
56
62
69
76
84
91
100
110
120
135
150
165
180
190
205
230
250
Type
Marking
Min（V）
V
ZT
（at
I
ZT
）
Nom（V）
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
110
120
135
150
165
180
200
220
240
260
280
300
330
Max（V）
3.50
3.80
4.10
4.56
4.93
5.36
5.92
6.51
7.18
7.88
8.67
9.59
10.5
11.6
12.6
14.1
15.8
17.1
19.2
21.2
23.3
26.0
28.9
32.0
34.9
37.9
41.5
45.6
49.8
54.0
58.8
65.6
71.7
78.8
87.0
96.0
105
116
127
142
157
172
191
211
231
251
271
291
315
346
I
ZT
(mA)
75
69
64
58
53
49
45
41
37
34
31
28
25
23
21
19
17
16
14
13
12
11
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
2.3
2.0
1.9
1.7
1.6
1.4
1.2
1.0
1.0
1.0
1.0
1.0
1.0
Z
ZT
（at
I
ZT
）
Max
(Ω)
10
10
9.0
9.0
8.0
7.0
5.0
2.0
3.5
4.0
4.5
5.0
7.0
8.0
9.0
10
14
16
20
22
23
25
35
40
45
50
60
70
80
95
110
125
150
175
200
250
350
450
550
700
900
1100
1200
1400
1600
1800
2000
2100
2300
2500
Admissible
Zener Current
I
ZM
(mA)
285
263
243
219
203
186
170
154
140
127
116
104
95
86
79
71
63
58
52
47
43
38
35
31
28
26
24
22
20
18
17
15
14
12
11
10
9.5
8.6
7.8
7.0
6.3
5.8
5.2
4.7
4.3
3.9
3.7
3.4
3.1
2.8
1SMA4728AG
1SMA4729AG
1SMA4730AG
1SMA4731AG
1SMA4732AG
1SMA4733AG
1SMA4734AG
1SMA4735 AG
1SMA4736 AG
1SMA4737 AG
1SMA4738 AG
1SMA4739 AG
1SMA4740 AG
1SMA4741 AG
1SMA4742 AG
1SMA4743 AG
1SMA4744 AG
1SMA4745 AG
1SMA4746 AG
1SMA4747 AG
1SMA4748 AG
1SMA4749 AG
1SMA4750 AG
1SMA4751 AG
1SMA4752 AG
1SMA4753 AG
1SMA4754 AG
1SMA4755 AG
1SMA4756 AG
1SMA4757 AG
1SMA4758 AG
1SMA4759 AG
1SMA4760 AG
1SMA4761 AG
1SMA4762 AG
1SMA4763 AG
1SMA4764 AG
1SMA4765 AG
1SMA4766 AG
1SMA4767 AG
1SMA4768 AG
1SMA4769 AG
1SMA4770 AG
1SMA4771 AG
1SMA4772 AG
1SMA4773 AG
1SMA4774 AG
1SMA4775 AG
1SMA4776 AG
1SMA4777 AG
728A
729A
730A
731A
732A
733A
734A
735A
736A
737A
738A
739A
740A
741A
742A
743A
744A
745A
746A
747A
748A
749A
750A
751A
752A
753A
754A
755A
756A
757A
758A
759A
760A
761A
762A
763A
764A
765A
766A
767A
768A
769A
770A
771A
772A
773A
774A
775A
776A
777A
3.10
3.40
3.70
4.06
4.50
4.84
5.32
5.86
6.46
7.12
7.79
8.60
9.50
10.4
11.4
12.4
13.8
15.2
16.8
19.0
20.8
22.8
25.3
28.2
31.3
34.2
37.2
40.9
44.9
48.6
53.6
58.9
64.6
71.2
77.9
86.0
95.0
104
114
125
140
155
170
189
209
229
249
269
289
313
（1）
V
ZT
is tested with pulses (20 ms)
2 of 3
1SMA4728AG THRU 1SMA4777AG
PACKAGE OUTLINE
Plastic surface mounted package; 2 leads
SMA
A
c
a
VM
A
A
H
E
e
D
A
g
g
E
e
UNIT
mm
max
min
max
mil
min
A
2.2
1.9
87
75
D
4.5
4.0
181
157
E
2.7
2.3
106
91
H
E
c
0.31
0.15
12
6
e
1.6
1.3
63
51
g
1.5
0.9
59
35
5.2
4.7
205
185
0.3
12
The recommended mounting pad size
1.8
(71)
2.4
(94)
1.8
(71)
REV.08
3 of 3
1.8
(71)
mm
Unit
：
(mil)
e
a
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