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1SMA4740 Datasheet(PDF) 4 Page - Taiwan Semiconductor Company, Ltd

Part No. 1SMA4740
Description  1.0 Watt Surface Mount Silicon Zener Diodes
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Maker  TSC [Taiwan Semiconductor Company, Ltd]
Homepage  http://www.taiwansemi.com
Logo TSC - Taiwan Semiconductor Company, Ltd

1SMA4740 Datasheet(HTML) 4 Page - Taiwan Semiconductor Company, Ltd

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RATINGS AND CHARACTERISTIC CURVES (1SMA4737 THRU 1SMA200Z)
Version:H11
FIG.6 TYPICAL CAPACITANCE versus Vz
10
100
1000
1
10
100
Vz, FORWARD VOLTAGE (V)
50% OF BREAKDOWN
0V BIAS
1.0V BIAS
FIG. 7 TEMPERATURE COEFFICIENTS
-4
-2
0
2
4
6
8
10
12
23
45
678
9
10
11
12
Vz, ZENER VOLTAGE(V)
a-RANGE FOR UNITS TO 12 VOLTS
RANGE Vz@ IZT
FIG.8 TEMPERATURE COEFFICIENTS
1
10
100
10
100
Vz, ZENER VOLTAGE(V)
RANGE Vz@ IZT
b-RANGE FOR UNITS 12 TO 100 VOLTS
FIG. 9 EFFECT OF ZENER CURRENT
-4
-2
0
2
4
6
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
Vz, ZENER VOLTAGE(V)
NOTE:BELOW 3 VOLTAGE ABOVE a
VOLTS CHANGES IN ZENER CURRENT
NOT AFFECT TEMPERATURE
Vz@ IZT
TA=25℃
0.01mA
1 mA
20mA
FIG.10 MAXIMUM SURGE POWER
1
10
100
0.01
0.1
1
10
100
1000
PW, PULSE WIDTH (ms)
20% DUTY CYCLE
11V-91V NON-REPETITIVE
10% DUTY CYCLE
5% DUTY CYCLE
0.8V-10V NON-REPETITIVE
RECTANGULAR WAVEFORM
TA=25℃ PRIOR TO INITIAL PULSE


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