1N4728A Series
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C unless otherwise noted, V
F
= 1.2 V Max, I
F
= 200 mA for all types) (continued)
Zener Voltage
(8.)(9.)
JEDEC
Device
(7.)
V
Z
(Volts)
Min
Nom
Max
@ I
ZT
(mA)
Zener Impedance
(10.)
Z
ZT
@ I
ZT
(W)
Z
ZK
@ I
ZK
(W)
(mA)
Leakage Current
I
R
@ V
R
(µA Max)
(Volts)
I
r (11.)
(mA)
1N4746A
1N4747A
1N4748A
1N4749A
1N4750A
1N4751A
1N4752A
1N4753A
1N4754A
1N4755A
1N4756A
1N4757A
1N4758A
1N4759A
1N4760A
1N4761A
1N4762A
1N4763A
1N4764A
17.1
19.0
20.9
22.8
25.7
28.5
31.4
34.2
37.1
40.9
44.7
48.5
53.2
58.9
64.6
71.3
77.9
86.5
95
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
75
82
91
100
18.9
21.0
23.1
25.2
28.4
31.5
34.7
37.8
41.0
45.2
49.4
53.6
58.8
65.1
71.4
78.8
86.1
95.6
105
14
12.5
11.5
10.5
9.5
8.5
7.5
7
6.5
6
5.5
5
4.5
4
3.7
3.3
3
2.8
2.5
20
22
23
25
35
40
45
50
60
70
80
95
110
125
150
175
200
250
350
750
750
750
750
750
1000
1000
1000
1000
1500
1500
1500
2000
2000
2000
2000
3000
3000
3000
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
13.7
15.2
16.7
18.2
20.6
22.8
25.1
27.4
29.7
32.7
35.8
38.8
42.6
47.1
51.7
56
62.2
69.2
76
250
225
205
190
170
150
135
125
115
110
95
90
80
70
65
60
55
50
45
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
Z
) MEASUREMENT
9. ON Semiconductor guarantees the zener voltage when measured at 90 seconds while maintaining the lead temperature (T
L
) at 30°C
±
1°C,
3/8″ from the diode body.
ZENER IMPEDANCE (Z
Z
) DERIVATION
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
ZT
or I
ZK
) is superimposed on I
ZT
or I
ZK
.
SURGE CURRENT (I
R
) NON-REPETITIVE
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
ZT
, per JEDEC registration; however, actual device capability
is as described in Figure 5 of the General Data – DO-41 Glass.
PD , MAXIMUM STEADY STATE POWER DISSIPATION (WATTS)
1.25
1
0.75
0.5
0.25
L = 1″
L = 1/8″
L = 3/8″
L = LEAD LENGTH
TO HEAT SINK
0
20
40
60
80 100 120 140
T
L
, LEAD TEMPERATURE (°C)
160
180
200
Figure 1. Power Temperature Derating Curve
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