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1SMA4740 Datasheet(PDF) 3 Page - Taiwan Semiconductor Company, Ltd

Part No. 1SMA4740
Description  1.25 Watts Surface Mount Silicon Zener Diode
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Maker  TSC [Taiwan Semiconductor Company, Ltd]
Homepage  http://www.taiwansemi.com
Logo TSC - Taiwan Semiconductor Company, Ltd

1SMA4740 Datasheet(HTML) 3 Page - Taiwan Semiconductor Company, Ltd

  1SMA4740 Datasheet HTML 1Page - Taiwan Semiconductor Company, Ltd 1SMA4740 Datasheet HTML 2Page - Taiwan Semiconductor Company, Ltd 1SMA4740 Datasheet HTML 3Page - Taiwan Semiconductor Company, Ltd 1SMA4740 Datasheet HTML 4Page - Taiwan Semiconductor Company, Ltd  
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FIG.1- POWER TEMPERATURE DERATING CURVE
FIG.2- TYPICAL FORWARD CHARACTERISTICS
FIG.3- EFFECT OF ZENER CURRENT
ON ZENER IMPEDANCE
FIG.5- TYPICAL LEAKAGE CURRENT
FIG.4- EFFECT OF ZENER VOLTAGE
ON ZENER IMPEDANCE
AMBIENT TEMPERATURE( C)
o
V FORWARD VOLTAGE (VOLTS)
F
,
I,
Z
ZENER CURRENT (mA)
I,
Z
ZENER CURRENT (mA)
V,
Z
NOMINAL ZENER VOLTAGE (VOLTS)
0
20
40
60
80
100
120
140
160
180
200
MINIMUM
MAXIMUM
70 C
o
150 C
o
25 C
o
0C
o
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1
2
5
10
20
50
100
200
500
1000
T = 25 C
I (rms)= 0.1 I (dc)
f = 1KHz
J
ZZ
o
47V
27V
0.8V
0.1
0.25
0.50
0.75
1.0
1.25
0.2
0.5
1
2
5
10
20
50
100
1
2
5
10
20
50
100
200
500
1000
1
T = 25 C
I (rms)= 0.1 I (dc)
f = 1KHz
J
ZZ
o
I = 1.0mA
Z
5.0mA
20mA
2
3
5
7
10
20
30
50 70 100
1
2
5
7
10
20
50
70
100
200
500
700
1000
TYPICAL LEAKAGE CURRENT
AT 80% OF NOMINAL
BREAKDOWN VOLTAGE
+125 C
o
+25 C
o
34
5
6
7
8
9
10
11
12
13
14
15
0.001
0.002
0.005
0.007
0.01
0.02
0.05
0.07
0.1
0.2
0.5
0.7
1
2
5
7
10
20
50
70
100
200
500
700
1000
2000
5000
7000
10000
0
RATINGS AND CHARACTERISTIC CURVES (1SMA4737 THRU 1SMA200Z)
Version:C08


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