1SMA4737 Datasheet, PDF (4/4 Pages) Taiwan Semiconductor Company, Ltd – 1.25 Watts Surface Mount Silicon Zener Diode

RATINGS AND CHARACTERISTIC CURVES (1SMA4737 THRU 1SMA200Z)
FIG.6- TYPICAL CAPACITANCE versus Vz
400
300
200
100
0V BIAS
1.0V BIAS
10
8
4
1
50% OF BREAKDOWN BIAS
10
100
VZ, FORWARD VOLTAGE (VOLTS)
FIG.7- TEMPERATURE COEFFICIENTS
+12
+10
+8.0
+6.0
+4.0
+2.0
0
-2.0
-4.0
2
a-RANGE FOR UNITS TO 12 VOLTS
RANGE
VZ @ IZT
34
5
6
7
8
9 10 11 12
VZ, ZENER VOLTAGE (VOLTS)
FIG.8- TEMPERATURE COEFFICIENTS
b-RANGE FOR UNITS 11 TO 100 VOLTS
100
70
50
30
20
VZ @ IZT
10
RANGE
7
5
3
2
1
10
20
30
50
70
100
VZ, ZENER VOLTAGE (VOLTS)
FIG.9- EFFECT OF ZENER CURRENT
+6.0
+4.0
VZ @ IZT
TJ=25 ^oC
+2.0
0
-2.0
-4.0
3
20mA
0.01mA
1.0mA
NOTE: BELOW 3 VOLTS AND ABOVE a VOLTS
CHANGES IN ZENER CURRENT OO NOT
AFFECT TEMPERATURE COEFFICIENTS
4
5
6
7
8
VZ, ZENER VOLTAGE (VOLTS)
FIG.10- MAXIMUM SURGE POWER
100
70
50
30
20
5% _{DU0.T8YV-C10YVCLNEON-REPETITIV1E1V-91V} ^{NON-REPETITIVE}
10
10% _{DUTY CYCLE}
7
5
20% DUTY CYCLE
3
2
1
0.01 0.02
0.05 0.1 0.2
0.5
1
2
5
10 20
PW, PULSE WIDTH (ms)
RECTANGULAR
WAVEFORM
TJ = 25^oC PRIOR TO
INITIAL PULSE
50 100 200
500 1000
Version: C08