WildGoose Semiconductor Rev. A1.0 2015
1
1SMAF4728A-1SMAF4777A
Features:
1 Watt SMAF Silicon Planar Zener Diodes
z Total power dissipation: Max. 1 W.
z Wide zener reverse voltage range 3.3V to 330V.
z Small plastic package suitable for surface
mounted design.
SMAF
1
2
Absolute Maximum Ratings And Characteristics （Ta = 25 °C）
Parameter
Power Dissipation at T
c
=75°C
Symbol
Value
Unit
P
D
1
W
Forward Voltage at I
F
= 200 mA
V
F
1.2
V
Junction Temperature Range
Storage Temperature Range
TJ
TS
- 55 to + 150
- 55 to + 150
°C
°C
1SMAF4728A-1SMAF4777A
WildGoose Semiconductor
1.Cathode 2. Anode
Characteristics at Ta = 25°C
（1）
V is tested with pulses (20 ms)
ZT
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
1SMAF4728A
1SMAF4729A
1SMAF4730A
1SMAF4731A
1SMAF4732A
1SMAF4733A
1SMAF4734A
1SMAF4735A
1SMAF4736A
1SMAF4737A
1SMAF4738A
1SMAF4739A
1SMAF4740A
1SMAF4741A
1SMAF4742A
1SMAF4743A
1SMAF4744A
1SMAF4745A
1SMAF4746A
1SMAF4747A
1SMAF4748A
1SMAF4749A
1SMAF4750A
1SMAF4751A
1SMAF4752A
1SMAF4753A
1SMAF4754A
1SMAF4755A
1SMAF4756A
1SMAF4757A
1SMAF4758A
1SMAF4759A
1SMAF4760A
1SMAF4761A
1SMAF4762A
1SMAF4763A
1SMAF4764A
1SMAF4765A
1SMAF4766A
1SMAF4767A
1SMAF4768A
1SMAF4769A
1SMAF4770A
1SMAF4771A
1SMAF4772A
1SMAF4773A
1SMAF4774A
1SMAF4775A
1SMAF4776A
1SMAF4777A
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
2
WildGoose Semiconductor
WildGoose Semiconductor Rev. A1.0 2015