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

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FIG.6- TYPICAL CAPACITANCE versus Vz
FIG.7- TEMPERATURE COEFFICIENTS
FIG.8- TEMPERATURE COEFFICIENTS
FIG.9- EFFECT OF ZENER CURRENT
V , FORWARD VOLTAGE (VOLTS)
Z
V , ZENER VOLTAGE (VOLTS)
Z
V , ZENER VOLTAGE (VOLTS)
Z
V , ZENER VOLTAGE (VOLTS)
Z
0V BIAS
1.0V BIAS
50% OF BREAKDOWN BIAS
1
10
100
4
8
10
100
200
300
400
b-RANGE FOR UNITS 11 TO 100 VOLTS
V@ I
ZZT
RANGE
10
20
30
50
70
100
1
2
3
5
7
10
20
30
50
70
100
a-RANGE FOR UNITS TO 12 VOLTS
V@ I
ZZT
RANGE
23
4
5
6
7
8
9
10
11
12
-2.0
-4.0
0
+2.0
+4.0
+6.0
+8.0
+10
+12
V@ I
TJ=25 C
ZZT
o
20mA
0.01mA
1.0mA
NOTE: BELOW 3 VOLTS AND ABOVE a VOLTS
CHANGES IN ZENER CURRENT OO NOT
AFFECT TEMPERATURE COEFFICIENTS
34
5
6
7
8
-4.0
-2.0
0
+2.0
+4.0
+6.0
Version: C08
FIG.10- MAXIMUM SURGE POWER
PW, PULSE WIDTH (ms)
RECTANGULAR
WAVEFORM
TJ = 25 C PRIOR TO
INITIAL PULSE
o
11V-91V
NON-REPETITIVE
0.8V
-10V
NON-REPETITIVE
5% DUTY
CYCLE
10% DUTY CYCLE
20% DUTY CYCLE
1
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
10
20
50
100
200
500
1000
2
3
5
7
10
20
30
50
70
100
RATINGS AND CHARACTERISTIC CURVES (1SMA4737 THRU 1SMA200Z)


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