1N4728A through 1N4764A Series
ELECTRICAL CHARACTERISTICS
(T
A
= 25ºC unless
otherwise noted. V
F
= 1.2 V Max @ I
F
= 200mA for all types)
Symbol
V
Z
I
ZT
Z
ZT
I
Zk
Z
Zk
I
R
V
R
I
F
V
F
I
r
Parameter
Reverse Zener Voltage @ I
ZT
Reverse Zener Current
Maximum Zener Impedance @ I
ZT
Reverse Zener Current
Maximum Zener Impedance @ I
Zk
Reverse Leakage Current @ V
R
Reverse Voltage
Forward Current
Forward Voltage @ I
F
Surge Current @ T
A
= 25ºC
ELECTRICAL CHARACTERISTICS
(T
A
= 25ºC unless otherwise noted, V
F
= 1.2 V Max @ I
F
= 200mA for all types)
Zener Voltage
(Note 3 & 4.)
Device
(Note 2.)
Zener Impedance
(Note 5.)
Z
ZT
@ I
ZT
(Ω)
Ω
10
10
9
9
8
7
5
2
3.5
4
4.5
5
7
8
9
Z
ZK
@ I
ZK
(Ω)
Ω
400
400
400
400
500
550
600
700
700
700
700
700
700
700
700
(mA)
1
1
1
1
1
1
1
1
1
0.5
0.5
0.5
0.25
0.25
0.25
Leakage Current
I
R
@ V
R
(µA Max)
µ
100
100
50
10
10
10
10
10
10
10
10
10
10
5
5
(Volts)
1
1
1
1
1
1
2
3
4
5
6
7
7.6
8.4
9.1
I
r
(Note 6.)
Device
Marking
1N4728A
1N4729A
1N4730A
1N4731A
1N4732A
1N4733A
1N4734A
1N4735A
1N4736A
1N4737A
1N4738A
1N4739A
1N4740A
1N4741A
1N4742A
V
Z
(Volts)
Min
3.135
3.42
3.705
4.085
4.465
4.845
5.32
5.89
6.46
7.125
7.79
8.645
9.5
10.45
11.4
Nom
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
8.2
9.1
10
11
12
Max
3.465
3.78
4.095
4.515
4.935
5.355
5.88
6.51
7.14
7.875
8.61
9.555
10.5
11.55
12.6
@ I
ZT
(mA)
76
69
64
58
53
49
45
41
37
34
31
28
25
23
21
(mA)
1380
1260
1190
1070
970
890
810
730
660
605
550
500
454
414
380
1N4728A
1N4729A
1N4730A
1N4731A
1N4732A
1N4733A
1N4734A
1N4735A
1N4736A
1N4737A
1N4738A
1N4739A
1N4740A
1N4741A
1N4742A
2. TOLERANCE AND TYPE NUMBER DESIGNATION (V
Z
)
The type numbers listed have a standard tolerance on the nominal zener voltage of
±5%.
3. SPECIALS AVAILABLE INCLUDE
Nominal zener voltages between the voltages shown and tighter voltage tolerances. For detailed information on price,
availability and delivery, contact your nearest Tak Cheong representative.
4. ZENER VOLTAGE (V
Z
) MEASUREMENT
Nominal zener voltage is measured with the device junction in the thermal equilibrium at the lead temperature (T
L
) at 30°C
±1°C
and 3/8” lead length.
5. ZENER IMPEDANCE (Z
Z
) DERIVATION
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
.
6. SURGE CURRENT (I
r
) NON-REPETITIVE
The rating listed in the electrical characteristics table is maximum peak, non-repetitive, reverse surge current of �½ 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.
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