1
Revision Date: 2/17/2012
New Product
Zener Diode Chip Series
CD4728A thru CD4764A
Maximum Ratings
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
Forward Voltage @ 200mA: 1.5 volts maximum
Features
• All junctions completely protected with silicon dioxide
• 0.5 Watt capability with proper heat sinking
• Electrically equivalent to 1N4728A thru 1N4764A
• Compatible with all wire bonding and die attach
techniques with the exception of solder reflow.
NOMINAL ZENER MAXIMUM MAXIMUM MAXIMUM
ZENER TEST ZENER REVERSE TEST KNEE TEST
TYPE VOLTAGE CURRENT IMPEDANCE CURRENT FACTOR IMPEDANCE CURRENT
NUMBER VZ @ IZT l ZT ZZT @ l ZT IR @ VRVRZZK 3IZK
(NOTE 1) (NOTE 2) IR(NOTE 2)
VOLTS mA OHMS μA VOLTS OHMS mA
CD4728A 3.3 76 10 100 1 400 1.0
CD4729A 3.6 69 10 100 1 400 1.0
CD4730A 3.9 64 9 100 1 400 1.0
CD4731A 4.3 58 9 10 1 400 1.0
CD4732A 4.7 53 8 10 1 500 1.0
CD4733A 5.1 49 7 5 1 550 1.0
CD4734A 5.6 45 5 5 2 600 1.0
CD4735A 6.2 41 2 5 3 700 1.0
CD4736A 6.8 37 3.5 3 4 700 1.0
CD4737A 7.5 34 4 3 5 700 0.5
CD4738A 8.2 31 4.5 3 6 700 0.5
CD4739A 9.1 28 5 3 7 700 0.5
CD4740A 10.0 25 7 3 7.6 700 0.25
CD4741A 11.0 23 8 2 8.4 700 0.25
CD4742A 12.0 21 9 1 9.1 700 0.25
CD4743A 13.0 29 10 0.5 9.9 700 0.25
CD4744A 15.0 17 14 0.1 11.4 700 0.25
CD4745A 16.0 15.5 16 0.1 12.2 700 0.25
CD4746A 18.0 14 20 0.1 13.7 750 0.25
CD4747A 20.0 12.5 22 0.1 15.2 750 0.25
CD4748A 22.0 11.5 23 0.1 16.7 750 0.25
CD4749A 24.0 10.5 25 O.1 18.2 750 0.25
CD4750A 27.0 9.5 35 0.1 20.6 750 0.25
CD4751A 30.0 8.5 40 0.1 22.8 1000 0.25
CD4752A 33.0 7.5 45 0.1 25.1 1000 0.25
CD4753A 36.0 7.0 50 0.1 27.4 1000 0.25
CD4754A 39.0 6.5 60 0.1 29.7 1000 0.25
CD4755A 43.0 6.0 70 0.1 32.7 1500 0.25
CD4756A 47.0 5.5 80 0.1 35.8 1500 0.25
CD4757A 51.0 5.0 95 0.1 38.8 1500 0.25
CD4758A 56.0 4.5 110 0.1 42.6 2000 0.25
CD4759A 462.0 4.0 125 0.1 47.1 2000 0.25
CD4760A 68.0 3.7 150 0.1 51.7 2000 0.25
CD4761A 75.0 3.3 175 0.1 56.0 2000 0.25
CD4762A 82.0 3.0 200 0.1 62.2 3000 0.25
CD4763A 91.0 2.8 250 0.1 69.2 3000 0.25
CD4764A 100.0 2.5 350 0.1 76.0 3000 0.25
Electrical Specifications @ +25 ºC (Unless Otherwise Specified)
NOTE 1 Zener voltage range equals nominal Zener voltage. + 5% for “A” Suffix. No Suffix denotes + 10 %. Zener voltage is
read using a pulse measurement, 10 milliseconds maximum. "C" suffix = + 2% and "D" suffix = + 1%.
NOTE 2 Zener impedance is derived by superimposing on lZT a 60Hz rms ac current equal to 10 % of IZT.
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Revision Date: 2/17/2012
Aeroflex / Metelics, Inc.
975 Stewart Drive, 54 Grenier Field Road,
Sunnyvale, CA 94085 Londonderry, NH 03053
Tel: (408) 737-8181 Tel: (603) 641-3800
Fax: (408) 733-7645 Fax: (603)-641-3500
Sales: 888-641-SEMI (7364)
Hi-Rel Components
9 Hampshire Street,
Lawrence, MA 01840
Tel: (603) 641-3800
Fax: (978) 683-3264
www.aeroflex.com/metelics-hirelcomponents
Aeroflex / Metelics, Inc. reserves the right to make changes to any products and services
herein at any time without notice. Consult Aeroflex or an authorized sales representative to
verify that the information in this data sheet is current before using this product. Aeroflex
does not assume any responsibility or liability arising out of the application or use of any
product or service described herein, except as expressly agreed to in writing by Aeroflex;
nor does the purchase, lease, or use of a product or service from Aeroflex convey a license
under any patent rights, copyrights, trademark rights, or any other of the intellectual rights
of Aeroflex or of third parties.
Copyright 2011 Aeroflex / Metelics. All rights reserved.
www.aeroflex.com/metelics metelics-sales@aeroflex.com
ISO 9001: 2008 certified companies
CD4728A thru CD4764A
.1 .2 .3 .4 .5 1 2 5 10 20 30 40 50 100
OPERATING CURRENT lZT (mA)
ZENER IMPEDANCE VS. OPERATING CURRENT
1000
500
400
300
200
100
50
40
30
20
10
5
4
3
2
1
ZENER IMPEDANCE ZZT (OHMS)
3.3 VOLT
5.1 VOLT
27 VOLT
11 VOLT
6.2 VOLT
DESIGN DATA
METALLIZATION: Top: (Anode) Al
Back: (Cathode) Au
AL THICKNESS: 25,000 Å Minimum
GOLD THICKNESS: 4,000 Å Minimum
CHIP THICKNESS: 10 Mils
CIRCUIT LAYOUT DATA: For Zener operation, cathode must
be operated positive with respect to anode.
Outline Drawing
Graphs
Anode
