NTC thermistor chip material, chip, resistor and sensor, and making methods thereof

A thermistor chip and thermistor technology are applied to resistors with negative temperature coefficients, thermometers and instruments using electric/magnetic elements that are directly sensitive to heat, and can solve aging drift, service life reduction, chip Breakdown and other problems to achieve the effect of ensuring smoothness and consistency, prolonging service life and increasing thickness

Inactive Publication Date: 2015-12-16
MINGGUANG XUSHENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the case of repeated current passing, the NTC thermistor chip provided by the prior art is easily broken down by the current or aging drift, thereby reducing its service life

Method used

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  • NTC thermistor chip material, chip, resistor and sensor, and making methods thereof
  • NTC thermistor chip material, chip, resistor and sensor, and making methods thereof
  • NTC thermistor chip material, chip, resistor and sensor, and making methods thereof

Examples

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Effect test

Embodiment 1

[0083] The present embodiment provides a kind of NTC thermistor chip material, comprises the component of following parts by weight: Mn 3 o 4 1100 copies, Co 2 o 3 95 parts, NiO210 parts, Fe 2 o 3 590 parts, the average particle size of each component is maintained between 300-400nm, and the purity of each component is greater than 99.7%.

Embodiment 2

[0085] The present embodiment provides a kind of NTC thermistor chip material, comprises the component of following parts by weight: Mn 3 o 4 1000 copies, Co 2 o 3 100 parts, NiO205 parts, Fe 2 o 3 595 parts, the average particle size of each component is maintained between 200-300nm, and the purity of each component is greater than 99.6%.

Embodiment 3

[0087] The present embodiment provides a kind of NTC thermistor chip material, comprises the component of following parts by weight: Mn 3 o 4 1100 copies, Co 2 o 3 100 parts, NiO200 parts, Fe 2 o 3 600 parts, the average particle size of each component is maintained between 400-500nm, and the purity of each component is greater than 99.9%.

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Abstract

The invention discloses an NTC thermistor chip material, a chip, a resistor and a sensor, and making methods thereof, and belongs to the field of thermistors. The material comprises, by weight, 1000-1200 parts of Mn3O4, 95-105 parts of Co2O3, 190-210 parts of NiO and 590-610 parts of Fe2O3. The NTC thermistor made by using the NTC thermistor chip material has the advantages of difficult breakdown by current, difficult resistance drift and long service life.

Description

technical field [0001] The invention relates to the field of thermistors, in particular to an NTC thermistor chip material, chip, resistor, sensor and preparation method. Background technique [0002] Thermistors are a type of temperature-sensitive components. According to the temperature coefficient, they are divided into positive temperature coefficient thermistors (Positive Temperature Coefficient, PTC thermistor) and negative temperature coefficient thermistors (Negative Temperature Coefficient, NTC thermistor). Specifically, the resistance value of the PTC thermistor increases as the temperature increases, and the resistance value of the NTC thermistor decreases as the temperature increases. Among them, NTC thermistors are widely used in refrigerators, air conditioners, microwave ovens, medical instruments, automotive temperature measurement, fire alarms and other fields due to their advantages of high sensitivity, small fluctuations in temperature characteristics, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/36C04B35/622H01C7/04G01K7/22
Inventor 苑广军苑广礼
Owner MINGGUANG XUSHENG TECH
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