1N4728A 查看數據表（PDF） - HY ELECTRONIC CORP.
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1N4728A Datasheet PDF : 3 Pages
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RATING AND CHARACTERISTIC CURVES
1N4728A thru 1N4764A
Symbol
Vz
IZT
ZZT
IZK
ZZK
IR
VR
IF
VF
Parameter
Reverse Zener Voltage@ IZT
Reverse current
Maximum zener impedance @ IZT
Reverse current
Maximum zener impedance @ Izk
Reverse leakage current @ VR
Breakdown voltage
Forward current
Forward voltage @ IF
I
IF
VV
V
ZR
I
IZT
VF
FIG. 1 - ZENER VOLTAGE REGULATOR
FIG.2 - TEMPERATURE COEFFICIENTS
(-55°C to +150°C temperature;90% of the units are in the ranges indicated.)
+12
+10
+8
+6
+4
Vz @ IZT
+2
0
RANG
-2
-4
2 3 4 5 6 7 8 9 10 11 12
ZENER VOLTAGE (VOLTS)
100
70
50
30
20
10
7
5
3
2
1
10
RANGE
Vz @ IZT
20
30
50
70
100
ZENER VOLTAGE (VOLTS)
FIG.3 - EFFECT OF ZENER CURRENT ON ZENER IMPEDANCE
1000
500
200
100
50
20
10
5
2
1
0.1 0.2
0.5 1 2
5 10 20
ZENER CURRENT (mA)
50 100
~ 408 ~
FIG.4 - EFFECT OF ZENER CURRENT ON ZENER IMPEDANCE
1000
500
200
Iz-1mA
TJ=25°C
Iz(ms)=0.1 Iz(dc)
f=60Hz
10
5mA
5
20mA
2
10
5
2
1
1
23
5 7 10
20 30 50 70 100
ZENER CURRENT (mA)
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