High-voltage-resistant subsize polymer PTC thermistor with high lightning level and preparation method thereof
A technology of thermistors and polymers, applied in the direction of resistors with positive temperature coefficients, etc.
Inactive Publication Date: 2012-08-01
SHANGHAI CHANGYUAN WAYON CIRCUIT PROTECTION CO LTD
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However, due to its low working voltage, poor insulation strength, and weak pressure bearing capacity, when the power grid overvoltage or lightning interference occurs, the communication equipment will often fail or even the working components will be broken down, which will bring greater damage to the electronic communication equipment. Damage, especially in various applications related to human machine interfaces and data ports such as USB, HDMI, Ethernet and connector ports, requiring stronger ESD and lightning strike protection
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[0022] A high-voltage, high-voltage, small-size polymer PTC thermistor with a high lightning strike level, consisting of a polymer PTC core material and a metal foil attached to both surfaces of the core material, and a pair of electrodes welded to the outer surface of the metal foil And the insulating layer covered on the outside, the polymer PTC core material includes polymers, carbon black and processing aids, wherein the withstand voltage level is not less than A.C.600Vrms, the lightning strike level is 4-6KV peak voltage, and the impact current is 100- 150A, the waveform is 10 / 700μs, and the components of the polymer PTC core material are as follows by weight percentage:
[0023] Polymer 25%-60%
[0024] Carbon black 20%-45%
[0025] Thermally conductive filler 25%-50%
[0026] The balance is processing aids, wherein,
[0027] The high molecular polymer is a blend of one or more polymers selected from polyethylene, polypropylene and polyvinylidene fluoride;
[0028] T...
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Abstract
The invention relates to a high-voltage-resistant subsize polymer PTC thermistor with a high lightning level and a preparation method thereof. The high-voltage-resistant subsize polymer PTC thermistor with a high lightning level consists of a polymer PTC core material, metal foil adhered onto two surfaces of the core material, extraction electrodes welded onto the external surface of the metal foil and externally coated insulating layers, wherein the PTC core material is prepared by mixing a high polymer, carbon black, a heat conducting filling material and a processing aid, and the weight percent of the above-mentioned components is as follows: 25 to 60% of the high polymer, 20 to 45% of carbon black and 25 to 50% of the heat conducting filling material, with the balance being the processing aid. The size of the high-voltage-resistant subsize polymer PTC thermistor with a high lightning level provided in the invention is far less than the size of commercially available products of a same kind in China, and the PTC thermistor can stand high voltage and has a lightning level far higher than that of products of a same kind in China.
Description
technical field [0001] The invention relates to an electronic component and a manufacturing method thereof, especially a high-voltage-resistant small-size polymer PTC thermistor with high lightning strike level and its manufacturing method. Background technique [0002] The rapid development of information science and technology has led to the extensive development of various communication equipment with large-scale integrated circuits as the core. Compared with independent component equipment, it has small size, low cost, low power consumption, fast operation speed, and high reliability. advantage. However, due to its low working voltage, poor insulation strength, and weak pressure bearing capacity, when the power grid overvoltage or lightning interference occurs, the communication equipment will often fail or even the working components will be broken down, which will bring greater damage to the electronic communication equipment. Damage, especially in various application...
Claims
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IPC IPC(8): H01C7/02
Inventor 赵涛温伟刘正平王军
Owner SHANGHAI CHANGYUAN WAYON CIRCUIT PROTECTION CO LTD