1SMA4737 Datasheet, PDF (3/4 Pages) Taiwan Semiconductor Company, Ltd – 1.25 Watts Surface Mount Silicon Zener Diode

RATINGS AND CHARACTERISTIC CURVES (1SMA4737 THRU 1SMA200Z)
FIG.1- POWER TEMPERATURE DERATING CURVE
1.25
1.0
0.75
0.50
0.25
0
0 20 40 60 80 100 120 140 160 180 200
AMBIENT TEMPERATURE(^oC)
FIG.3- EFFECT OF ZENER CURRENT
ON ZENER IMPEDANCE
1000
500
200
100
50
20
10
5
47V
27V
0.8V
TJ = 25 ^oC
IZ(rms)= 0.1 IZ(dc)
f = 1KHz
2
1
0.1 0.2
0.5 1
2
5 10 20
IZ, ZENER CURRENT (mA)
50 100
FIG.4- EFFECT OF ZENER VOLTAGE
ON ZENER IMPEDANCE
1000
700
500
200
100
70
50
IZ = 1.0mA
5.0mA
TJ = 25 ^oC
IZ(rms)= 0.1 IZ(dc)
f = 1KHz
20
20mA
10
7
5
2
1
1
23
5 7 10
20 30
IZ, ZENER CURRENT (mA)
50 70 100
FIG.2- TYPICAL FORWARD CHARACTERISTICS
1000
MINIMUM
500
MAXIMUM
200
100
50
20
70 ^oC
10
150 ^oC
5
25 ^oC
2
1
0.4
0 ^oC
0.5
0.6
0.7
0.8
0.9
1.0
1.1
VF, FORWARD VOLTAGE (VOLTS)
FIG.5- TYPICAL LEAKAGE CURRENT
10000
7000
5000
2000
1000
700
500
TYPICAL LEAKAGE CURRENT
AT 80% OF NOMINAL
BREAKDOWN VOLTAGE
200
100
70
50
20
10
7
5
2
1
0.7
0.5
0.2
0.1
0.07
0.05
+125 ^oC
0.02
0.01
0.007
0.005
+25 ^oC
0.002
0.001
3 4 5 6 7 8 9 10 11 12 13 14 15
VZ, NOMINAL ZENER VOLTAGE (VOLTS)
Version:C08