• Total power dissipation: Max. 1 W.
• Wide zener reverse voltage range 3.3V to 330V.
• Small plastic package suitable for surface mounted design.
FEATURES
MECHANICAL DATA
Case: SMA
Terminals: Solderable per MIL-STD-750, Method 2026
pprox. Weight: 0.055g / 0.002oz
•
•
• A
PINNING
PIN
1
2
DESCRIPTION
Cathode
Anode
Simplified outline SMA and symbol
1
2
Absolute Maximum Ratings And Characteristics Ta = 25（ °C）
Fig.1 Maximum Continuous Power Derating
0.2
0.4
0.6
0.8
1.0
1.2
0.0
25 50
75
100 125 150 175
Power Dissipation (W)
T °C)
c
,Case Temperature (
Parameter
Power Dissipation at T =75
c
°C
Symbol
Value
Unit
P
D
1
W
Forward Voltage at I = 200 mA
F
V
F
1.2
V
Junction Temperature Range
Storage Temperature Range
TJ
TS
- 55 to + 150
- 55 to + 150
°C
°C
Silicon Planar zener diode
1SMA4728A-1SMA4777A
1
www.slkormicro.com
Characteristics at Ta = 25°C
Type Marking
（1）
Zener Voltage Range
V
ZT
（at I ）
ZT
I
ZT
Dynamic
Impedance
Reverse Current
Z
ZT
（at I ）
ZT
I
R
at V
R
Max (Ω)
Max（μA）
（V）Nom（V）Min（V） Max（V）
(mA)
Admissible
Zener Current
I
ZM
(mA)
5.1
5.6
6.2
7.5
8.2
9.1
10
11
12
13
15
16
18
20
22
24
27
30
33
36
6.8
39
4.84
5.32
5.86
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
6.46
37.2
5.36
5.92
6.51
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
7.18
41.5
49
45
41
34
31
28
25
23
21
19
17
16
14
13
12
11
9.5
8.5
7.5
7.0
37
6.5
7.0
5.0
2.0
4.0
4.5
5.0
7.0
8.0
9.0
10
14
16
20
22
23
25
35
40
45
50
3.5
60
10
10
10
10
10
10
10
5
5
5
5
5
5
5
5
5
5
5
5
10
5
1
2
3
5
6
7
7
8
9
10
11
12
13
15
17
18
21
23
25
27
4
30
5
3.6
3.9
4.3
4.7
3.40
3.70
4.06
4.50
3.80
4.10
4.56
4.93
69
64
58
53
10
9.0
9.0
8.0
100
50
25
10
1
1
1
1
3.33.10 3.50 75 10 100
1
300
330
64.6
71.2
77.9
95.0
104
114
125
140
155
170
189
209
229
249
269
289
313
86.0
71.7
78.8
87.0
105
116
127
142
157
172
191
211
231
251
271
291
315
346
96.0
3.7
3.3
3.0
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
2.8
150
175
200
350
450
550
700
900
1100
1200
1400
1600
1800
2000
2100
2300
2500
250
52
56
62
76
84
91
100
110
120
135
150
165
180
190
205
230
250
69
47
44
.
9
48.6
53.6
58.9
49
.
8
54.0
58.8
65.6
5
.
5
5.0
4.5
4.0
80
95
110
125
35
38
42
47
4340.9 45.6 6.0 70
1
32
68
75
82
100
110
120
135
150
165
180
200
220
240
260
280
91
51
56
62
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
186
170
154
127
116
104
95
86
79
71
63
58
52
47
43
38
35
31
28
26
140
24
263
243
219
203
285
3.1
2.8
20
22
14
12
11
9.5
8.6
7.8
7.0
6.3
5.8
5.2
4.7
4.3
3.9
3.7
3.4
10
18
17
15
1SMA4728A
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1SMA4733A
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1SMA4735A
1SMA4736A
1SMA4737A
1SMA4738A
1SMA4739A
1SMA4740A
1SMA4741A
1SMA4742A
1SMA4743A
1SMA4744A
1SMA4745A
1SMA4746A
1SMA4747A
1SMA4748A
1SMA4749A
1SMA4750A
1SMA4751A
1SMA4752A
1SMA4753A
1SMA4754A
1SMA4755A
1SMA4756A
1SMA4757A
1SMA4758A
1SMA4759A
1SMA4760A
1SMA4761A
1SMA4762A
1SMA4763A
1SMA4764A
1SMA4765A
1SMA4766A
1SMA4767A
1SMA4768A
1SMA4769A
1SMA4770A
1SMA4771A
1SMA4772A
1SMA4773A
1SMA4774A
1SMA4775A
1SMA4776A
1SMA4777A
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
1SMA4728A-1SMA4777A
2
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