1N4678 Series
100
70
50
30
20
10
7
5
3
2
1
0.01
0.02
0.05
0.1
0.2
0.5
1
2
5
10
20
50
100
200
500
1000
10% DUTY CYCLE
20% DUTY CYCLE
5% DUTY CYCLE
RECTANGULAR
WAVEFORM
T
J
= 25°C PRIOR TO
INITIAL PULSE
Ppk , PEAK SURGE POWER (WATTS)
11 V-91 V NONREPETITIVE
1.8 V-10 V NONREPETITIVE
PW, PULSE WIDTH (ms)
Figure 7a. Maximum Surge Power 1.8–91 Volts
Ppk , PEAK SURGE POWER (WATTS)
ZZ , DYNAMIC IMPEDANCE (OHMS)
1000
700
500
300
200
100
70
50
30
20
10
7
5
3
2
1
0.01
1000
500
RECTANGULAR
WAVEFORM, T
J
= 25°C
200
100
50
20
10
5
2
1
0.1
0.2
0.5
V
Z
= 2.7 V
47 V
27 V
T
J
= 25°C
i
Z
(rms) = 0.1 I
Z
(dc)
f = 60 Hz
100-200 VOLTS NONREPETITIVE
6.2 V
0.1
1
10
100
1000
1
2
5
10
20
50
100
PW, PULSE WIDTH (ms)
I
Z
, ZENER CURRENT (mA)
Figure 7b. Maximum Surge Power DO-204AH
100–200 Volts
Figure 8. Effect of Zener Current on
Zener Impedance
ZZ , DYNAMIC IMPEDANCE (OHMS)
1000
700
500
200
100
70
50
20
10
7
5
2
1
1
2
3
5
7
10
I
Z
= 1 mA
5 mA
20 mA
I F , FORWARD CURRENT (mA)
T
J
= 25°C
i
Z
(rms) = 0.1 I
Z
(dc)
f = 60 Hz
1000
500
200
100
50
20
10
5 150°C
2
1
75°C
MAXIMUM
MINIMUM
25°C
0°C
20
30
50
70 100
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
V
Z
, ZENER VOLTAGE (VOLTS)
V
F
, FORWARD VOLTAGE (VOLTS)
Figure 9. Effect of Zener Voltage on Zener Impedance
Figure 10. Typical Forward Characteristics
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