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SMAJ4728A Scheda tecnica(PDF) 2 Page - List of Unclassifed Manufacturers

Il numero della parte SMAJ4728A
Spiegazioni elettronici  Transient Voltage Suppressor
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Produttore elettronici  ETC2 [List of Unclassifed Manufacturers]
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SMAJ4728A Scheda tecnica(HTML) 2 Page - List of Unclassifed Manufacturers

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SMAJ4728A thru SMAJ4751A
Document Number: SMAJ4728A thru SMAJ4751A
www.smsemi.com
Feb.29, 2012
2
Electrical Characteristics @ 25°C (Unless Otherwise Noted) TABLE1
Note:
1.
The type numbers shown with an A suffix have a 5% tolerance on nominal zener voltage. No suffix signifies a 10%
tolerance, C signifies 2%, and D signifies 1% tolerance.
2.
The Zener impedance is derived from the 60 HZ ac voltage ,which results when an ac current having an rms value equal to
10% of the dc Zener current (IZT or IZK ) is superimposed on IZT or IZK. Zener impedance is measured at two points to insure a
sharp knee on the breakdown curve and eliminate unstable units.
3.
The reverse surge current is measured at 25°C ambient using a 1/2 square wave or equivalent sine wave pulse 1/120 second
duration superimposed on IZT.
4.
Voltage at thermal equilibrium or 90seconds after application of dc current.
Part
Number
Zener
Voltage
VZ @ IZT
Test
Current
Maximum
Dynamic
Impedance
ZZT @ IZT
Maximum
Knee
Impedance
ZZk @ IZk
Knee
Current
Maximum
Reverse
Current
IR @ VR
Maximum
Regulator
Current
TL=
100°C
Maximum
Surge
Current
VZ
(V)
IZT
(mA)
ZZT
(OHMS)
ZZK
(OHMS)
IZK
(mA)
IR
(µA)
VR
(V)
IZM
(mA)
Izsm
(mA)
SMAJ4728A
SMAJ4729A
SMAJ4730A
SMAJ4731A
3.3
3.6
3.9
4.3
76.0
69.0
64.0
58.0
10.0
10.0
9.0
9.0
400
400
400
400
1.00
1.00
1.00
1.00
100
100
50
10
1.0
1.0
1.0
1.0
552
504
468
434
1380
1260
1190
1070
SMAJ4732A
SMAJ4733A
SMAJ4734A
SMAJ4735A
4.7
5.1
5.6
6.2
53.0
49.0
45.0
41.0
8.0
7.0
5.0
2.0
500
550
600
700
1.00
1.00
1.00
1.00
10
10
10
10
1.0
1.0
2.0
3.0
386
356
324
292
970
890
810
730
SMAJ4736A
SMAJ4737A
SMAJ4738A
SMAJ4739A
6.8
7.5
8.2
9.1
37.0
34.0
31.0
28.0
3.5
4.0
4.5
5.0
700
700
700
700
1.00
0.50
0.50
0.50
10
10
10
10
4.0
5.0
6.0
7.0
266
242
220
200
660
605
550
500
SMAJ4740A
SMAJ4741A
SMAJ4742A
SMAJ4743A
10.0
11.0
12.0
13.0
25.0
23.0
21.0
19.0
7.0
8.0
9.0
10.0
700
700
700
700
0.25
0.25
0.25
0.25
10
5
5
5
7.6
8.4
9.1
9.9
182
166
152
138
454
414
380
344
SMAJ4744A
SMAJ4745A
SMAJ4746A
SMAJ4747A
15.0
16.0
18.0
20.0
17.0
15.5
14.0
12.5
14.0
16.0
20.0
22.0
700
700
750
750
0.25
0.25
0.25
0.25
5
5
5
5
11.4
12.2
13.7
15.2
132
114
100
90
304
285
250
225
SMAJ4748A
SMAJ4749A
SMAJ4750A
SMAJ4751A
22.0
24.0
27.0
30.0
11.5
10.5
9.5
8.5
23.0
25.0
35.0
40.0
720
750
750
1000
0.25
0.25
0.25
0.25
5
5
5
5
16.7
18.2
20.6
22.8
82
76
68
60
205
190
170
150
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