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High Purity Electronic Grade Zinc Oxide
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  • Air ProHigh Purity Electronic Grade Zinc Oxide
  • Air ProHigh Purity Electronic Grade Zinc Oxide
  • Air ProHigh Purity Electronic Grade Zinc Oxide
  • Air ProHigh Purity Electronic Grade Zinc Oxide
  • Air ProHigh Purity Electronic Grade Zinc Oxide

High Purity Electronic Grade Zinc Oxide

The important role of high purity electronic grade zinc oxide in varistor

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High Purity Electronic Grade Zinc Oxide

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Product Data Of High Purity Electronic Grade Zinc Oxide:

Product name:

Zinc Oxide

CAS NO.

1314-13-2

EINECS NO.

215-222-5

Molecular formula:

ZnO

Density:

5.606g/cm3

Molecular weight:

81.38

Appearance:

White hexagonal crystal or powder

The Important Role Of High Purity Electronic Grade Zinc Oxide In Varistor


One Important properties of high purity electronic grade zinc oxide film-pressure sensitivity (mainly expressed in the characteristics of nonlinear voltammetry).

When the high purity electronic grade zinc oxide varistor is subjected to an applied voltage, there is a threshold voltage, that is, the varistor voltage (V). When the applied voltage is higher than this value, it enters the breakdown voltage region. At this time, a small change in voltage will cause a rapid increase in current, and the amplitude of the change is characterized by the nonlinear coefficient (a). This feature makes zinc oxide varistor materials widely used in overcurrent protection of various circuits.

Due to the rapid development of integrated circuits, low voltage and low power are increasingly required for varistor. The varistor voltage used for overvoltage protection of integrated circuits is generally (1OV. With the development of very large scale integrated circuits, varistor with high a value and varistor voltage <5V becomes more and more important. Oxidation The varistor property of zinc varistor comes from its grain boundary effect, which is mainly related to the number of interfaces. The more the number of interfaces, the greater the varistor voltage; conversely, the smaller. Increase the particle size of zinc oxide crystal or reduce the thickness of zinc oxide material It is an effective way to reduce the number of currents flowing up the interface of zinc oxide crystals and reduce their varistor voltage. Therefore, high purity grade zinc oxide films have significant low-pressure varistor properties.

MST chemical high purity electronic grade zinc oxide is made by indirect method with high purity and low impurities. It can meet all the requirement of varistor. That can keep customers' product quality stable.



High Purity Electronic Grade Zinc Oxide Specification:

 Standard:《JB/T9670-2014》

 

 Item

 

Zinc oxide(Zn0 calculating as dry materia)% ≥

99.7

Potassium oxide(K)%≤

0.001

Sodium oxide(K)%≤

0.001

Ferric oxide (Fe)%≤

0.002

Cadmium oxide (Cd)%≤

0.001

Lead oxide(Pb)%≤

0.005

Copper oxide(Cu)%≤

0.0002

Metal content(as Zn)% ≤

NONE

moisture%

0.3

Insoluble Matter in Hci %  ≤

0.004

Loss on ignition % ≤

0.2

PH

7.0-8.0

The average particle size(D50)um ≤

0.5

Residue on sieve (44um)% ≤

0.1


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