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Non-magnetism high-voltage sheet type multilayer ceramic capacitor and its producing method

A technology of ceramic capacitors and multilayer ceramics, applied in the direction of multilayer capacitors, fixed capacitor electrodes, fixed capacitor dielectrics, etc., can solve the problems of high Q value, work, non-magnetic, etc. small effect

Inactive Publication Date: 2007-02-28
GUANGDONG FENGHUA ADVANCED TECH HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a class I chip multilayer ceramic dielectric capacitor with characteristics such as non-magnetic, high Q value, and high voltage, thereby solving the problem that the existing multilayer ceramic dielectric capacitor cannot be used in a high magnetic field and high power environment. work problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Selected ceramic material:

[0044] Select the porcelain material of magnesium titanate and magnesium silicate mixture with uniform particle size distribution and sintering at medium temperature. The sintering temperature is between 1080-1160. Traditional technology is used to make standard samples. The dielectric thickness is designed to be 1mil, and then the breakdown of the product is tested. Voltage, the breakdown voltage is required to be 1200-2000V / mil, and the voltage of 200V-500V is applied to 50-200 standard samples. The failure rate within 1000 hours is required to be 0, and the failure rate within 2000 hours is within 1%. To test the temperature coefficient, it is required to meet the requirements of CG, that is, meet the requirements of 0±30PPM / ℃; or the requirements of CP, that is, meet the requirements of 90±20PPM / ℃. To test the Q value performance, the Q value is required to be >25000 (1MHZ).

[0045] Selected internal electrode paste:

[0046] After de...

Embodiment 2

[0066] Same as embodiment 1, except that after the terminal is sealed and fired with all silver terminal paste, the capacitor is no longer soldered with two sheet-shaped wires.

Embodiment 3

[0068] Same as embodiment 1, except that the metal content of the inner paste is between 45%-50%, the amount of inorganic addition is between 5.0-5.5%, and the thickness of the two sheet-shaped wires is 0.5mm.

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PUM

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Abstract

The invention relates to a non-magnetic high-voltage I-type multilayer ceramic capacitor and relative preparation. Wherein, said capacitor is formed by inner electrode, medium layer, and end electrode, which are made from non-magnetic medium ceramic, non-magnetic inner slurry, and non-magnetic end slurry, without manganese, chromic, nickel and other magnetic metals; the number of medium layer is dual, while the thickness of each layer is 2-15mil; and in the processes as mixing slurry, compressing, adhering and sintering end electrode, it all uses non-magnetic tools. The invention has high Q value, to work under strong magnetic field.

Description

technical field [0001] The invention relates to a chip multilayer ceramic dielectric capacitor and a manufacturing method thereof. More specifically, the invention relates to a non-magnetic high-voltage class I chip multilayer ceramic dielectric capacitor and a manufacturing method thereof. Background technique [0002] The so-called Class I chip ceramic capacitor refers to a chip multilayer ceramic capacitor whose temperature coefficient summarizes that the dielectric is positive temperature coefficient, negative temperature coefficient, and zero temperature coefficient. They are widely used in high frequency, high Q value and other electronic circuits. At present, most of the Class I high-voltage ceramic capacitors produced by domestic manufacturers are disc high-voltage capacitors, and some are chip multilayer high-voltage capacitors. However, because the terminal electrode material contains nickel elements, the products cannot work under high magnetic fields, and the Q v...

Claims

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Application Information

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IPC IPC(8): H01G4/12H01G4/008H01G4/30H01B3/12C04B35/00
Inventor 梁力平赖永雄李基森张尹肖培义陈玫陈红梅齐坤卢艺森
Owner GUANGDONG FENGHUA ADVANCED TECH HLDG
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