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1SMA4740 Datasheet(PDF) 3 Page - Microdiode Electronics (Jiangsu) Co.,Ltd.

Part No. 1SMA4740
Description  SURFACE MOUNT ZENER DIODE
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Maker  CHENDA [Microdiode Electronics (Jiangsu) Co.,Ltd.]
Homepage  http://www.microdiode.com/en
Logo CHENDA - Microdiode Electronics (Jiangsu) Co.,Ltd.

1SMA4740 Datasheet(HTML) 3 Page - Microdiode Electronics (Jiangsu) Co.,Ltd.

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Rev:2019A0
Page :3
https://www.microdiode.com
Zener Voltage - 3.3 to 200 Volts Peak Pulse Power - 1.0 W
1SMA4728A THRU 1SMA200A
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
o
AMBIENT TEMPERATURE( C)
VF, FORWARD VOLTAGE (VOLTS)
Z
I, ZENER CURRENT (mA)
Z
I, ZENER CURRENT (mA)
Z
V, NOMINAL ZENER VOLTAGE (VOLTS)
0
20
40
60
80
100
120
140
160
180
200
MINIMUM
MAXIMUM
o
70 C
o
150 C
o
25 C
o
0C
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.0
2.0
5.0
10
20
50
100
200
500
1000
T= 25 C
I (rms)= 0.1 I
ZZ
(dc)
f = 1KHz
J
o
47V
27V
0.8V
0.1
0.25
0.50
0.75
1.0
1.25
0.2
0.5
1.0
2.0
5.0
10
20
50
100
1.0
2.0
5.0
10
20
50
100
200
500
1000
1.0
T= 25 C
I (rms)= 0.1 I
ZZ
(dc)
f = 1KHz
J
o
IZ = 1.0mA
5.0mA
20mA
2.0
3.0
5.0 7.0 10
20
30
50 70 100
1.0
2.0
5.0
7.0
10
20
50
70
100
200
500
700
1000
TYPICAL LEAKAGE CURRENT
AT 80% OF NOMINAL
BREAKDOWN VOLTAGE
o
+125 C
o
+25 C
3.0
4.0
5.0 6.0
7.0
8.0 9.0
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
1.0
2.0
5.0
7.0
10
20
50
70
100
200
500
700
1000
2000
5000
7000
10000
FIG.6- TYPICAL CAPACITANCE versus Vz
FIG.7- TEMPERATURE COEFFICIENTS
10
VZ, FORWARD VOLTAGE (VOLTS)
VZ, ZENER VOLTAGE (VOLTS)
0V BIAS
1.0V BIAS
50% OF BREAKDOWN BIAS
1.0
100
4
8
10
100
200
300
400
a-RANGE FOR UNITS TO 12 VOLTS
V@
ZZ
I T
RANGE
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10
11
12
-2.0
-4.0
0
+2.0
+4.0
+6.0
+8.0
+10
+12
The cruve graph is for reference only


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