RATING AND CHARACTERISTIC CURVES
1N4728A thru 1N4764A
I
Symbol
Vz
I
ZT
Z
ZT
I
ZK
Z
ZK
I
R
V
R
I
F
V
F
Parameter
Reverse Zener Voltage@ I
ZT
Reverse current
Maximum zener impedance @ I
ZT
Reverse current
Maximum zener impedance @ Izk
Reverse leakage current @ V
R
Breakdown voltage
Forward current
Forward voltage @ I
F
V
Z
I
F
V
R
V
I
V
F
I
ZT
FIG. 1 - ZENER VOLTAGE REGULATOR
FIG.2 - TEMPERATURE COEFFICIENTS
(-55°C to +150°C temperature;90% of the units are in the ranges indicated.)
100
70
50
30
20
10
7
5
3
2
1
10
20
30
50
ZENER VOLTAGE (VOLTS)
70
100
RANGE
TEMPERATURE COEFFICIENT (mV /
°C)
+10
+8
+6
+4
+2
0
-2
-4
2
3
4
5
6
7
8
9
10
11
12
ZENER VOLTAGE (VOLTS)
RANG
Vz @
I
ZT
TEMPERATURE COEFFICIENT (Mv /
°C)
+12
Vz @ I
ZT
FIG.3 - EFFECT OF ZENER CURRENT ON ZENER IMPEDANCE
1000
500
DYNAMIC IMPEANCE (OHMS)
200
100
50
20
10
5
2
1
0.1 0.2
0.5
1
2
5
10 20
ZENER CURRENT (mA)
50
100
DYNAMIC IMPEANCE (OHMS)
FIG.4 - EFFECT OF ZENER CURRENT ON ZENER IMPEDANCE
1000
500
200
10
5
20mA
2
10
5
2
1
1
2
3
5 7 10
20 30
ZENER CURRENT (mA)
50 70 100
5mA
Iz-1mA
T
J
=25°C
Iz(ms)=0.1 Iz(dc)
f=60Hz
~ 408 ~
HY [ HY ELECTRONIC CORP. ]
