Features
l
Hermetic Glass Package
l
Silicon Planar Zener Diodes
l
These diodes are also available in the MELF case with type
designation DL4728 thru DL4764.
Mechanical Data
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Case: DO-41 Molded Glass
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Polarity: is indicated by cathode band.
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Weight: 0.378 grams (Approx.)
Maximum Ratings
l
Operating Temperature: -55
o
C to +150
o
C
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Storage Temperature: -55
o
C to +150
o
C
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For capacitive load, derate current by 20%
Electrical Characteristics @ 25
o
C Unless Otherwise Specified
DC Power
Dissipation P
d
1.0W T
A
=100
o
C
Peak Forward
Surge Current
I
FSM
See Page 2
Thermal
Resistance 100
o
C/W Note 1
Power Derating
from 100
o
C P
tot
10mW/
o
C
Note: (1) Valid provided that electrodes at a distance
of 10mm from case are kept at ambient
temperature.
1N4728
THRU
1N4764
1.0 Watt
Zener Diode
3.3 to 100 Volts
A
B
C
D
D
Cathode
Mark
MIN MAX MIN MAX
A 0.166 0.205 4.10 7.60
B 0.080 0.107 2.00 3.60 Diameter
C 0.026 0.034 0.70 0.90 Diameter
D 1.000 ----- 25.40 -----
DIMENSIONS
DIM
INCHES M M
NOTE
DO-41G
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omponents
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Version: 3 2003/01/22
Electrical Characteristics
(T
A
= 25C unless otherwise noted).
Maximum V
F
= 1.2V at I
F
= 200mA
Note
1: The JEDEC type number shown with an A suffix have a 5% tolerance on nominal zener voltage. No
suffix signifies a 10% tolerance, C signifies 2%, and D suffix signifies 1% tolerance.
2: The Zener impedance is derived from the 60 Hz 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
. Zener
impedance is measured at two points to insure a sharp knee on the breakdown curve and eliminate
unstable units.
3: The reverse surge current is measured at 25
o
C ambient using a 1/2 square wave or equivalent sine
wave pulse 1/120 second duration superimposed on I
ZT
.
4: Voltage measurements tobe performed 90 seconds after application of DC current.
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M C C
1N4728 thru 1N4764
MCC
PART
NUMBER
ZENER
VOLTAGE
V
Z
TEST
CURRENT
I
ZT
MAXIMUM
DYNAMIC
IMPEDANCE
Z
ZT
@ I
ZT
MAXIMUM
REVERSE
CURRENT
I
R
@ V
R
TEST
VOLTAGE
V
R
MAXIMUM
REGULATOR
CURRENT
IZM
T
A
= 50
C
MAXIMUM
KNEE
IMPEDANCE
Z
ZK
@ I
ZK
TEST
CURRENT
I
ZK
MAXIMUM
SURGE
CURRENT
I
S
MAXIMUM
TEMPERATURE
COEFFICIENT
@I
ZT
VOLTS mA OHMS
A VOLTS mA OHMS mA mA %/
O
C
1N4728 3.3 76 10 100 1 276 400 1.0
1380 -0.08
1N4729 3.6 69 10 100 1 252 400 1.0
1260 -0.08
1N4730 3.9 64 9 50 1 234 400 1.0 1190 -0.07
1N4731 4.3 58 9 10 1 217 400 1.0 1070 -0.07
1N4732 4.7 53 8 10 1 193 500 1.0 970
-0.03 to +0.04
1N4733 5.1 49 7 10 1 178 550 1.0 890
-0.03 to +0.04
1N4734 5.6 45 5 10 2 162 600 1.0 810 0.045
1N4735 6.2 41 2 10 3 146 700 1.0 730 0.055
1N4736 6.8 37 3.5 10 4 133 700 1.0 660 0.06
1N4737 7.5 34 4.0 10 5 121 700 0.5 605 0.065
1N4738 8.2 31 4.5 10 6 110 700 0.5 550 0.07
1N4739 9.1 28 5.0 10 7 100 700 0.5
500 0.075
1N4740 10 25 7 10 7.6 91 700 0.25 454 0.08
1N4741 11 23 8 5 8.4 83 700 0.25 414 0.08
1N4742 12 21 9 5 9.1 76 700 0.25
380 0.085
1N4743 13 19 10 5 9.9 69 700 0.25
344 0.085
1N4744 15 17 14 5 11.4 61 700 0.25 304 0.09
1N4745 16 15.5 16 5 12.2 57 700 0.25 285 0.09
1N4746 18 14 20 5 13.7 50 750 0.25 250 0.09
1N4747 20 12.5 22 5 15.2 45 750 0.25 225 0.09
1N4748 22 11.5 23 5 16.7 41 750 0.25 205 0.095
1N4749 24 10.5 25 5 18.2 38 750 0.25 190 0.095
1N4750 27 9.5 35 5 20.6 34 750
0.25
170 0.095
1N4751 30 8.5 40 5 22.8 30 1000
0.25
150 0.095
1N4752 33 7.5 45 5 25.1 27 1000
0.25
135 0.095
1N4753 36 7.0 50 5 27.4 25 1000
0.25
125 0.095
1N4754 39 6.5 60 5 29.7 23 1000
0.25
115 0.095
1N4755 43 6.0 70 5 32.7 22 1500
0.25
110 0.095
1N4756 47 5.5 80 5 35.8 19 1500
0.25
95 0.095
1N4757 51 5.0 95 5 38.8 18 1500
0.25
90 0.095
1N4758 56 4.5 110 5 42.6 16 2000
0.25
80 0.095
1N4759 62 4.0 125 5 47.1 14 2000
0.25
70 0.095
1N4760 68 3.7 150 5 51.7 13 2000
0.25
65 0.095
1N4761 75 3.3 175 5 56.0 12 2000
0.25
60 0.095
1N4762 82 3.0 200 5 62.2 11 3000 0.25 55 -----
1N4763 91 2.8 250 5 69.2 10 3000 0.25 50 -----
1N4764 100 2.5 350 5 76.0 9 3000 0.25 45 -----
Version: 3 2003/01/22
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