RATINGS AND CHARACTERISTIC CURVES 1N4728A THRU 1N4764A
Figure 2. Temperature Coefficients (-55℃
℃℃
℃to+150℃
℃℃
℃temperature change;90% of the units are in the ranges indicated.)
Figure 3. Typical Thermal Resistance versus Lead Figure 4. Effect of Zener Current
400
300
200
100
50
20
10
8
4
C, CAPACITANCE (PF)
1 2 5 10 20 50 100
V
Z, NOMINAL VZ (VOLTS)
1000
700
500
200
100
70
50
20
10
7
5
2
1
ZZDYNAMIC IMPEDANCE (OHNS)
1 2 3 5 7 10 20 30 50 70 100
V
Z, ZENER CURRENT (mA)
Iz=1mA
5mA
20mA
Tj=25℃
Iz(ms)=0.1Iz(do)
f=60hz
50%OF BREAKDOWNBIAS
0VBIAS
0VBIAS
175
150
125
100
75
50
25
0
θ
θ
θ
θJL, JUMCTION TO LEAD
THERMAL
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
+6
+4
+2
0
-2
-4
θ
θ
θ
θVZ, TEMPERATURE COEFF I CIENT
mV/
3 4 5 6 7 8
20mA
1mA
0.01mA
VZ@IZ
TA=25℃
NOTE:BELOW 3 VOLTS AAND ABOCE 8
VOLTS
CHANGES IN ZENER CURRENT DO NOT
FIG.1A- Range for Units to 12 Volts
+12
+10
+8
+6
+4
+2
0
-2
-4
θ
θ
θ
θVZ, TEMPERATURE COEFF I CIENT
mV/
2 3 4 5 6 7 8 9 10 11 12
VZ, ZENER VOLT AGE (VOLTS)
FIG.1B- Range for Units to 12 to 100
100
70
50
30
20
10
7
5
3
2
1
θ
θ
θ
θVZ, TEMPERATURE COEFFI CIENT
mV/
10 20 30 50 70 100
VZ, ZENER VOLT AGE (VOLTS)
RANGE
RANGE
VZ@IZT
VZ@IZT
L, LEAD LENGTH TO HEAT SINK (INCHES) V
ZENER VOLTAGE
VOLTS
1.2
5
1.0
0.7
5
0.5
Figure. 7 - Power Temperature Derating Curve
0 20 40 60 80 100 120 140 160 180 200
TL, LEAD TEMPERAT URE (OC)
PD ,MAXIMUM DISSIPATION
(WATTS)
11-6