DEVICE CHARACTERISTICS
1N4728A~1N4764A
a. Range for Units to 12 Volts
θ
VZ , TEMPERATURE COEFFICIENT (mV/
°
C)
θV
Z , TEMPERATURE COEFFICIENT (mV/
°C)
+12
+10
+8
+6
+4
+2
RANGE
0
-2
-4
2
3
4
5
6
7
8
9
10
11
12
V Z , ZENER VOLTAGE (VOLTS)
V Z
@ I
ZT
100
70
50
30
20
RANGE
V Z
@ I
ZT
b. Range for Units to 12 to 100 Volts
10
7
5
3
2
1
10
20
30
50
70
100
V Z , ZENER VOLTAGE (VOLTS)
Figure 2. Temperature Coefficients
(-55
°C
to +150
°C
temperature range; 90% of the units are in the ranges indicated.)
θ
JL , JUNCTION-TO-LEAD THERMAL RESISTANCE (mV/
°C)
150
125
100
75
θ
VZ , TEMPERATURE COEFFICIENT (mV/
°C)
175
+6
+4
V
Z
@ IZ
TA = 25
°C
+2
20 mA
0
0.01 mA
1 mA
-2
NOTE: BELOW 3 VOLTS AND ABOVE 8 VOLTS
NOTE:
CHANGES IN ZENER CURRENT DO NOT
NOTE:
EFFECT TEMPERATURE COEFFICIENTS
3
4
5
6
7
8
50
25
0
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
-4
V Z , ZENER VOLTAGE (VOLTS)
L, LEAD LENGTH TO HEAT SINK (INCHES)
Figure 3. Typical Thermal Resistance
versus Lead Length
Figure 4. Effect of Zener Current
100
P pk , PEAK SURGE POWER (WATTA)
70
50
30
20
10
7
5
20% DUTY CYCLE
3
2
1
0.01
10% DUTY CYCLE
5% DUTY CYCLE
11 V - 100 V NONREPETITIVE
3.3 V - 10 V NONREPETITIVE
RECT ANGULAR
WAVEFORM
T J = 25°C PRIOR TO
INITIAL PULSE
0.02
0.05
0.1
0.2
0.5
1
2
5
10
20
50
100
200
500
1000
PW, PULSE WIDTH (ms)
This graph represents 90 percentile data points.
For worst case design characteristics, multiply surge power by 2/3.
Figure 5. Maximum Surge Power
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5
REV.03 20121011
YEASHIN [ Yea Shin Technology Co., Ltd ]
