1N4728A Series
ELECTRICAL CHARACTERISTICS (T = 25°C unless otherwise noted, V = 1.2 V Max, I = 200 mA for all types) (continued)
A
F
F
(8.)(9.)
(10.)
Zener Voltage
Zener Impedance
Leakage Current
(11.)
V (Volts)
@ I
Z
ZT
@ I
Z
@ I
I @ V
R
I
r
Z
ZT
ZT
ZK
ZK
R
JEDEC
Device
(7.)
Min
Nom
Max
18.9
(mA)
(W)
(W)
(mA)
(µA Max)
(Volts)
(mA)
1N4746A
1N4747A
17.1
19.0
18
20
14
20
22
750
750
0.25
0.25
5
5
13.7
15.2
250
225
21.0
12.5
1N4748A
1N4749A
1N4750A
1N4751A
1N4752A
20.9
22.8
25.7
28.5
31.4
22
24
27
30
33
23.1
25.2
28.4
31.5
34.7
11.5
10.5
9.5
8.5
7.5
23
25
35
40
45
750
750
750
1000
1000
0.25
0.25
0.25
0.25
0.25
5
5
5
5
5
16.7
18.2
20.6
22.8
25.1
205
190
170
150
135
1N4753A
1N4754A
1N4755A
1N4756A
1N4757A
34.2
37.1
40.9
44.7
48.5
36
39
43
47
51
37.8
41.0
45.2
49.4
53.6
7
6.5
6
5.5
5
50
60
70
80
95
1000
1000
1500
1500
1500
0.25
0.25
0.25
0.25
0.25
5
5
5
5
5
27.4
29.7
32.7
35.8
38.8
125
115
110
95
90
1N4758A
1N4759A
1N4760A
1N4761A
1N4762A
53.2
58.9
64.6
71.3
77.9
56
62
68
75
82
58.8
65.1
71.4
78.8
86.1
4.5
4
3.7
3.3
3
110
125
150
175
200
2000
2000
2000
2000
3000
0.25
0.25
0.25
0.25
0.25
5
5
5
5
5
42.6
47.1
51.7
56
80
70
65
60
55
62.2
1N4763A
1N4764A
86.5
95
91
95.6
105
2.8
2.5
250
350
3000
3000
0.25
0.25
5
5
69.2
76
50
45
100
TOLERANCE AND TYPE NUMBER DESIGNATION
7. The JEDEC type numbers listed have a standard tolerance on the nominal zener voltage of ±5%.
SPECIALS AVAILABLE INCLUDE:
8. Nominal zener voltages between the voltages shown and tighter voltage tolerances. For detailed information on price, availability, and
delivery, contact your nearest ON Semiconductor representative.
ZENER VOLTAGE (V ) MEASUREMENT
Z
9. ON Semiconductor guarantees the zener voltage when measured at 90 seconds while maintaining the lead temperature (T ) at 30°C ± 1°C,
L
3/8″ from the diode body.
ZENER IMPEDANCE (Z ) DERIVATION
Z
10.The zener impedance is derived from the 60 cycle ac voltage, which results when an ac current having an rms value equal to 10% of the
dc zener current (I or I ) is superimposed on I or I .
ZT
ZK
ZT
ZK
SURGE CURRENT (I ) NON-REPETITIVE
R
11. The rating listed in the electrical characteristics table is maximum peak, non-repetitive, reverse surge current of 1/2 square wave or equivalent
sine wave pulse of 1/120 second duration superimposed on the test current, I , per JEDEC registration; however, actual device capability
ZT
is as described in Figure 5 of the General Data – DO-41 Glass.
1.25
L = LEAD LENGTH
TO HEAT SINK
L = 1″
L = 1/8″
L = 3/8″
1
0.75
0.5
0.25
0
20 40
60
80 100 120 140 160 180
200
T , LEAD TEMPERATURE (°C)
L
Figure 1. Power Temperature Derating Curve
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