山东晶导微电子有限公司
Jingdao Microelectronics
1SMAF4728A THRU 1SMAF4777A
Silicon Planar Zener Diodes
PINNING
PIN
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: SMAF
• Terminals: Solderable per MIL-STD-750, Method 2026
• A pprox. Weight: 27mg 0.00095oz
DESCRIPTION
1
Cathode
2
Anode
1
2
Simplified outline SMAF and symbol
Absolute Maximum Ratings And Characteristics (Ta = 25 °C)
Symbol
Value
Unit
Power Dissipation at T c =75°C
PD
1
W
Forward Voltage at I F = 200 mA
VF
1.2
V
Junction Temperature Range
TJ
- 55 to + 150
°C
Storage Temperature Range
TS
- 55 to + 150
°C
Parameter
Fig.1 Maximum Continuous Power Derating
1.2
Power Dissipation ( W )
1.0
0.8
0.6
0.4
0.2
0.0
25
50
75
100
125
150
175
T c ,Case Temperature (°C)
2016.10
SMAF-W-1SMAF4777A-1W
Page 1 of 3
Characteristics at Ta = 25°C
Dynamic
Impedance
Zener Voltage Range (1)
Type
Marking
V ZT(at I ZT)
Reverse Current
I ZT
Z ZT(at I ZT)
IR
at V R
Admissible
Zener Current
Min(V)
Nom(V)
Max(V)
(mA)
Max (Ω)
Max(μA)
(V)
I ZM (mA)
1SMAF4728A
728A
3.10
3.3
3.50
75
10
100
1
285
1SMAF4729A
729A
3.40
3.6
3.80
69
10
100
1
263
1SMAF4730A
730A
3.70
3.9
4.10
64
9.0
50
1
243
1SMAF4731A
731A
4.06
4.3
4.56
58
9.0
25
1
219
4.7
4.93
53
8.0
10
1
203
1SMAF4732A
732A
4.50
1SMAF4733A
733A
4.84
5.1
5.36
49
7.0
10
1
186
1SMAF4734A
734A
5.32
5.6
5.92
45
5.0
10
2
170
1SMAF4735A
735A
5.86
6.2
6.51
41
2.0
10
3
154
1SMAF4736A
736A
6.46
6.8
7.18
37
3.5
10
4
140
1SMAF4737A
737A
7.12
7.5
7.88
34
4.0
10
5
127
1SMAF4738A
738A
7.79
8.2
8.67
31
4.5
10
6
116
1SMAF4739A
739A
8.60
9.1
9.59
28
5.0
10
7
104
1SMAF4740A
740A
9.50
10
10.5
25
7.0
10
7
95
1SMAF4741A
741A
10.4
11
11.6
23
8.0
5
8
86
1SMAF4742A
742A
11.4
12
12.6
21
9.0
5
9
79
1SMAF4743A
743A
12.4
13
14.1
19
10
5
10
71
1SMAF4744A
744A
13.8
15
15.8
17
14
5
11
63
1SMAF4745A
745A
15.2
16
17.1
16
16
5
12
58
1SMAF4746A
746A
16.8
18
19.2
14
20
5
13
52
1SMAF4747A
747A
19.0
20
21.2
13
22
5
15
47
1SMAF4748A
748A
20.8
22
23.3
12
23
5
17
43
1SMAF4749A
749A
22.8
24
26.0
11
25
5
18
38
1SMAF4750A
750A
25.3
27
28.9
9.5
35
5
21
35
1SMAF4751A
751A
28.2
30
32.0
8.5
40
5
23
31
1SMAF4752A
752A
31.3
33
34.9
7.5
45
5
25
28
1SMAF4753A
753A
34.2
36
37.9
7.0
50
5
27
26
1SMAF4754A
754A
37.2
39
41.5
6.5
60
5
30
24
1SMAF4755A
755A
40.9
43
45.6
6.0
70
1
32
22
1SMAF4756A
756A
44.9
47
49.8
5.5
80
1
35
20
1SMAF4757A
757A
48.6
51
54.0
5.0
95
1
38
18
1SMAF4758A
758A
53.6
56
58.8
4.5
110
1
42
17
1SMAF4759A
759A
58.9
62
65.6
4.0
125
1
47
15
1SMAF4760A
760A
64.6
68
71.7
3.7
150
1
52
14
1SMAF4761A
761A
71.2
75
78.8
3.3
175
1
56
12
1SMAF4762A
762A
77.9
82
87.0
3.0
200
1
62
11
1SMAF4763A
763A
86.0
91
96.0
2.8
250
1
69
10
1SMAF4764A
764A
95.0
100
105
2.5
350
1
76
9.5
1SMAF4765A
765A
104
110
116
2.3
450
1
84
8.6
1SMAF4766A
766A
114
120
127
2.0
550
1
91
7.8
1SMAF4767A
767A
125
135
142
1.9
700
1
100
7.0
1SMAF4768A
768A
140
150
157
1.7
900
1
110
6.3
1SMAF4769A
769A
155
165
172
1.6
1100
1
120
5.8
1SMAF4770A
770A
170
180
191
1.4
1200
1
135
5.2
1SMAF4771A
771A
189
200
211
1.2
1400
1
150
4.7
1SMAF4772A
772A
209
220
231
1.0
1600
1
165
4.3
1SMAF4773A
773A
229
240
251
1.0
1800
1
180
3.9
1SMAF4774A
774A
249
260
271
1.0
2000
1
190
3.7
1SMAF4775A
775A
269
280
291
1.0
2100
1
205
3.4
1SMAF4776A
776A
289
300
315
1.0
2300
1
230
3.1
777A
313
330
346
1.0
2500
1
250
2.8
1SMAF4777A
(1) V ZT is tested with pulses (20 ms)
2016.10
www.sdjingdao.com
Page 2of 3
山东晶导微电子有限公司
Jingdao Microelectronics
1SMAF4728A THRU 1SMAF4777A
PACKAGE OUTLINE
Plastic surface mounted package; 2 leads
SMAF
∠ALL ROUND
C
A
∠ALL ROUND
HE
g
Top View
mil
Bottom View
A
C
D
E
e
g
HE
max
1.2
0.20
3.7
2.7
1.6
1.2
4.9
min
0.9
0.12
3.3
2.4
1.3
0.8
4.4
max
47
7.9
146
106
63
47
193
min
35
4.7
130
94
51
31
173
UNIT
mm
g
pad
e
E
A
pad
D
E
A
V M
∠
7°
The recommended mounting pad size
2.2
(86)
1.6
(63)
1.8
(71)
1.6
(63)
mm
Unit :
(mil)
2016.10
www.sdjingdao.com
Page 3 of 3
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