1N4728A THRU 1N4764A
SILICON ZENER DIODES
1.0 WATT, 3.3 THRU 100 VOLT
5% TOLERANCE
DESCRIPTION:
The CENTRAL SEMICONDUCTOR 1N4728A series
silicon Zener diode is a highly reliable voltage regulator
designed for use in industrial, commercial, entertainment
and computer applications.
MARKING: FULL PART NUMBER
MAXIMUM RATINGS: SYMBOL UNITS
Power Dissipation (TA=50°C) PD 1.0 W
Operating and Storage Temperature TJ, Tstg -65 to +200 °C
ELECTRICAL CHARACTERISTICS: (TA=25°C) VF=1.2V MAX @ IF=200mA (for all types)
TYPE
ZENER
VOLTAGE
VZ @ IZT
TEST
CURRENT
MAXIMUM
ZENER IMPEDANCE
MAXIMUM
REVERSE
CURRENT
MAXIMUM
DC
CURRENT
MAXIMUM
TEMPERATURE
COEFFICIENT
@ IZT
MIN NOM MAX IZT ZZT @ IZT ZZK @ IZK IR @ VRIZM ΘVZ
V V V mA Ω Ω mA μA V mA % / °C
1N4728A 3.135 3.3 3.465 76 10 400 1.0 100 1.0 1380 -0.08 to -0.05
1N4729A 3.420 3.6 3.780 69 10 400 1.0 100 1.0 1260 -0.08 to -0.05
1N4730A 3.705 3.9 4.095 64 9.0 400 1.0 50 1.0 1190 -0.07 to -0.02
1N4731A 4.085 4.3 4.515 58 9.0 400 1.0 10 1.0 1070 -0.07 to -0.01
1N4732A 4.465 4.7 4.935 53 8.0 500 1.0 10 1.0 970 -0.03 to +0.04
1N4733A 4.845 5.1 5.355 49 7.0 550 1.0 10 1.0 890 -0.01 to +0.04
1N4734A 5.320 5.6 5.880 45 5.0 600 1.0 10 2.0 810 0 to +0.045
1N4735A 5.890 6.2 6.510 41 2.0 700 1.0 10 3.0 730 +0.01 to +0.055
1N4736A 6.460 6.8 7.140 37 3.5 700 1.0 10 4.0 660 +0.015 to +0.06
1N4737A 7.125 7.5 7.875 34 4.0 700 0.5 10 5.0 605 +0.02 to +0.065
1N4738A 7.790 8.2 8.610 31 4.5 700 0.5 10 6.0 550 +0.03 to +0.07
1N4739A 8.645 9.1 9.555 28 5.0 700 0.5 10 7.0 500 +0.035 to +0.075
1N4740A 9.500 10 10.50 25 7.0 700 0.25 10 7.6 454 +0.04 to +0.08
1N4741A 10.45 11 11.55 23 8.0 700 0.25 5.0 8.4 414 +0.045 to +0.08
1N4742A 11.40 12 12.60 21 9.0 700 0.25 5.0 9.1 380 +0.045 to +0.085
1N4743A 12.35 13 13.65 19 10 700 0.25 5.0 9.9 344 +0.05 to +0.085
1N4744A 14.25 15 15.75 17 14 700 0.25 5.0 11.4 304 +0.055 to +0.09
1N4745A 15.20 16 16.80 15.5 16 700 0.25 5.0 12.2 285 +0.055 to +0.09
1N4746A 17.10 18 18.90 14 20 750 0.25 5.0 13.7 250 +0.06 to +0.09
1N4747A 19.00 20 21.00 12.5 22 750 0.25 5.0 15.2 225 +0.06 to +0.09
1N4748A 20.90 22 23.10 11.5 23 750 0.25 5.0 16.7 205 +0.06 to +0.095
1N4749A 22.80 24 25.20 10.5 25 750 0.25 5.0 18.2 190 +0.06 to +0.095
1N4750A 25.65 27 28.35 9.5 35 750 0.25 5.0 20.6 170 +0.06 to +0.095
Central
DO-41 CASE
R2 (14-October 2013)
www.centralsemi.com
1N4728A THRU 1N4764A
SILICON ZENER DIODES
1.0 WATT, 3.3 THRU 100 VOLT
5% TOLERANCE
DO-41 CASE - MECHANICAL OUTLINE
ELECTRICAL CHARACTERISTICS - Continued: (TA=25°C) VF=1.2V MAX @ IF=200mA (for all types)
TYPE
ZENER
VOLTAGE
VZ @ IZT
TEST
CURRENT
MAXIMUM
ZENER IMPEDANCE
MAXIMUM
REVERSE
CURRENT
MAXIMUM
DC
CURRENT
MAXIMUM
TEMPERATURE
COEFFICIENT
@ IZT
MIN NOM MAX IZT ZZT @ IZT ZZK @ IZK IR @ VRIZM ΘVZ
V V V mA Ω Ω mA μA V mA % / °C
1N4751A 28.50 30 31.50 8.5 40 1.0K 0.25 5.0 22.8 150 +0.06 to +0.095
1N4752A 31.35 33 34.65 7.5 45 1.0K 0.25 5.0 25.1 135 +0.06 to +0.095
1N4753A 34.20 36 37.80 7.0 50 1.0K 0.25 5.0 27.4 125 +0.06 to +0.095
1N4754A 37.05 39 40.95 6.5 60 1.0K 0.25 5.0 29.7 115 +0.06 to +0.095
1N4755A 40.85 43 45.15 6.0 70 1.5K 0.25 5.0 32.7 110 +0.06 to +0.095
1N4756A 44.65 47 49.35 5.5 80 1.5K 0.25 5.0 35.8 95 +0.06 to +0.095
1N4757A 48.45 51 53.55 5.0 95 1.5K 0.25 5.0 38.8 90 +0.06 to +0.095
1N4758A 53.20 56 58.80 4.5 110 2.0K 0.25 5.0 42.6 80 +0.06 to +0.095
1N4759A 58.90 62 65.10 4.0 125 2.0K 0.25 5.0 47.1 70 +0.06 to +0.095
1N4760A 64.60 68 71.40 3.7 150 2.0K 0.25 5.0 51.7 65 +0.06 to +0.095
1N4761A 71.25 75 78.75 3.3 175 2.0K 0.25 5.0 56.0 60 +0.06 to +0.095
1N4762A 77.90 82 86.10 3.0 200 3.0K 0.25 5.0 62.2 55 +0.06 to +0.095
1N4763A 86.45 91 95.55 2.8 250 3.0K 0.25 5.0 69.2 50 +0.06 to +0.095
1N4764A 95.00 100 105.0 2.5 350 3.0K 0.25 5.0 76.0 45 +0.06 to +0.095
R2
www.centralsemi.com
R2 (14-October 2013)
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which is part of Central’s Standard Terms and Conditions of sale, visit: www.centralsemi.com/terms
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(001)
REQUESTING PRODUCT PLATING
1. If requesting Tin/Lead plated devices, add the suffix “ TIN/LEAD” to the part number when
ordering (example: 2N2222A TIN/LEAD).
2. If requesting Lead (Pb) Free plated devices, add the suffix “ PBFREE” to the part number
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www.centralsemi.com
PDN01045
8/19/16
2/19/17
http://www.centralsemi.com 8/19/17
Summary:The 1N4728A, 1N4729A, 1N4730A, and 1N4731A, 1 watt Zener diodes in the DO-41 case are discontinued and now classified as End
of Life (EOL).
Although Central Semiconductor Corp. makes every effort to continue to produce devices that have been proclaimed EOL (End of Life) by
various manufacturers, it is an accepted industry practice to discontinue certain devices when customer demand falls below a minimum
level of sustainability. Accordingly, the following product(s) have been transitioned to End of Life status as part of Central's
Product Management Process. Any replacement product will be noted below. The effective date for placing the last purchase order will
be six(6) months from the date of this notice and twelve(12) months from the notice date for final shipments; this may be extended if
inventory is available.
Central Part Number _________________________Replacement _________________________
1N4728A BK N/A
1N4728A TR N/A
1N4729A BK N/A
1N4729A TR N/A
1N4730A BK N/A
1N4730A TR N/A
1N4730C BK N/A
1N4731A BK N/A
1N4731A TR N/A
Central would be happy to assist you by providing additional information or technical data to help locate an alternate source if we
have no replacement available. Please email your requests to engineering@centralsemi.com.
PDN01010 Rev:001
2/15/19
5/02/16
http://www.centralsemi.com 11/02/16
Summary:1 watt, high voltage (75V thru 100V), glass body Zener diodes manufactured in the DO-41 and MELF packages are discontinued
and now classified as End of Life (EOL). Rev:001 of PDN#010010, February 15, 2019, is being issued to add 1N4761A omitted from the
original PDN.
Although Central Semiconductor Corp. makes every effort to continue to produce devices that have been proclaimed EOL (End of Life) by
other manufacturers, it is an accepted industry practice to discontinue certain devices when customer demand falls below a minimum level of
sustainability. Accordingly, the following product(s) have been transitioned to End of Life status as part of Central's ongoing Product
Management Process. Any replacement products are noted below. The effective date for placing last purchase orders will be six (6) months
from the date of this notice and twelve (12) months from the notice date for final shipments, and minimum order quantities may apply.
The last purchase and shipment dates may be extended if inventory is available.
Central Part Number Replacement
CLL4762A BK N/A, Stock Only
CLL4762A TR N/A, Stock Only
CLL4762C BK N/A, Stock Only
CLL4762C TR N/A, Stock Only
CLL4763A BK N/A, Stock Only
CLL4763A TR N/A, Stock Only
CLL4764 TR N/A, Stock Only
CLL4764A BK N/A, Stock Only
CLL4764A TR N/A, Stock Only
1N4761A BK N/A, Stock Only
1N4761A TR N/A, Stock Only
1N4762A BK N/A, Stock Only
1N4762A TR N/A, Stock Only
1N4763A BK N/A, Stock Only
1N4763A TR N/A, Stock Only
1N4764 BK N/A, Stock Only
1N4764 TR N/A, Stock Only
1N4764A BK N/A, Stock Only
1N4764A TR N/A, Stock Only
Central would be happy to assist you by providing additional information or technical data to help locate an alternate source if we
have no replacement available. Please email your requests to engineering@centralsemi.com.
