Silicon Planar Power Zener Diodes stablilizing clipping circuits with
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ZM4728A ZM4764A
Silicon Planar Power Zener Diodes stablilizing clipping circuits with high power rating Standard Zener voltage tolerance These diodes also available DO-41 case with type designation 1N4728 1N4764A Lead (Pb)-free component Component accordance RoHS 2002/95/EC WEEE 2002/96/EC
18315
Mechanical Data
Case: MELF Glass case Weight: approx. Packaging Codes/Options: GS18 reel tape), k/box GS08 reel tape), k/box
Absolute Maximum Ratings
Tamb unless otherwise specified Parameter Zener current (see Table "Characteristics") Power dissipation
Test condition
Symbol Ptot
Value
Unit
Valid provided that electrodes kept ambient temperature.
Thermal Characteristics
Tamb unless otherwise specified Parameter Thermal resistance junction ambient Junction temperature Storage temperature
Test condition
Symbol RthJA Tstg
Value
Unit
Valid provided that electrodes kept ambient temperature.
Document Number 85786 Rev. 1.4, 12-Dec-05
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ZM4728A ZM4764A
Vishay Semiconductors Electrical Characteristics
Partnumber Nominal Zener Voltage3) ZM4728A ZM4729A ZM4730A ZM4731A ZM4732A ZM4733A ZM4734A ZM4735A ZM4736A ZM4737A ZM4738A ZM4739A ZM4740A ZM4741A ZM4742A ZM4743A ZM4744A ZM4745A ZM4746A ZM4747A ZM4748A ZM4749A ZM4750A ZM4751A ZM4752A ZM4753A ZM4754A ZM4755A ZM4756A ZM4757A ZM4758A ZM4759A ZM4760A ZM4761A ZM4762A ZM4763A ZM4764A
Test Current
Maximum Zener Impedance1)
Maximum Reverse Leakage Current
Maximum Reverse Leakage Current2)
15.5 12.5 11.5 10.5
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 0.25 0.25 0.25 0.25 0.25 0.25
11.4 12.2 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 62.2 69.2
Zener impedance derived from voltage which results when current having value equal Zener current (IZT IZK) superimposed IZK. Zener impedance measured points insure sharp knee breakdown curve eliminate unstable units
Valid provided that electrodes distance from case kept ambient temperature Measured under thermal equilibrium test conditions.
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Document Number 85786 Rev. 1.4, 12-Dec-05
ZM4728A ZM4764A
Vishay Semiconductors Typical Characteristics (Tamb unless otherwise specified)
18289
Figure Admissible Power Dissipation Ambient Temperature
Package Dimensions (Inches)
4.00 (0.157)
Method
Cathode Mark
(0.102) (0.094)
1.25 (0.049)
3.00 (0.118)
0.55 (0.022) (0.205) (0.189)
6.50 (0.256)
18317
Document Number 85786 Rev. 1.4, 12-Dec-05
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ZM4728A ZM4764A
Vishay Semiconductors Ozone Depleting Substances Policy Statement
policy Vishay Semiconductor GmbH Meet present future national international statutory requirements. Regularly continuously improve performance products, processes, distribution operating systems with respect their impact health safety employees public, well their impact environment. particular concern control eliminate releases those substances into atmosphere which known ozone depleting substances (ODSs). Montreal Protocol (1987) London Amendments (1990) intend severely restrict ODSs forbid their within next years. Various national international initiatives pressing earlier these substances. Vishay Semiconductor GmbH been able policy continuous improvements eliminate ODSs listed following documents. Annex list transitional substances Montreal Protocol London Amendments respectively Class ozone depleting substances Clean Amendments 1990 Environmental Protection Agency (EPA) Council Decision 88/540/EEC 91/690/EEC Annex (transitional substances) respectively. Vishay Semiconductor GmbH certify that semiconductors manufactured with ozone depleting substances contain such substances.
reserve right make changes improve technical design without further notice. Parameters vary different applications. operating parameters must validated each customer application customer. Should buyer Vishay Semiconductors products unintended unauthorized application, buyer shall indemnify Vishay Semiconductors against claims, costs, damages, expenses, arising directly indirectly, claim personal damage, injury death associated with such unintended unauthorized use. Vishay Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
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Document Number 85786 Rev. 1.4, 12-Dec-05
Legal Disclaimer Notice
Vishay
Disclaimer
product specifications data subject change without notice. Vishay Intertechnology, Inc., affiliates, agents, employees, persons acting their behalf (collectively, "Vishay"), disclaim liability errors, inaccuracies incompleteness contained herein other disclosure relating product. Vishay disclaims liability arising application product described herein information provided herein maximum extent permitted law. product specifications expand otherwise modify Vishay's terms conditions purchase, including limited warranty expressed therein, which apply these products. license, express implied, estoppel otherwise, intellectual property rights granted this document conduct Vishay. products shown herein designed medical, life-saving, life-sustaining applications unless otherwise expressly indicated. Customers using selling Vishay products expressly indicated such applications entirely their risk agree fully indemnify Vishay damages arising resulting from such sale. Please contact authorized Vishay personnel obtain written terms conditions regarding products designed such applications. Product names markings noted herein trademarks their respective owners.
Document Number: 91000 Revision: 18-Jul-08
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