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Combination for preparing negative temperature coefficient (NTC) thermistor chip and NTC thermistor made by using combination

A thermistor and electrode technology, applied in the direction of resistors with negative temperature coefficients, etc., can solve the problems of not being able to better meet the requirements of air conditioners, insufficient chip thickness and density, chip breakdown failure, etc., to ensure smooth Consistency and consistency, prevent performance changes, improve the effect of measurement accuracy

Active Publication Date: 2013-09-25
合肥市恒新基电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of realizing the present invention, the inventors found that the prior art has at least the following problems: NTC thermistors used in air conditioners on the market are generally subjected to high and low temperature shocks for about 1,000 times, and the resistance value deviation reaches more than 3%, which cannot be changed. Good to meet the use requirements of air conditioners and other electrical appliances with high and low temperature impact; due to the insufficient thickness and density of the chip, the chip is easily broken down and failed when the current is passed repeatedly

Method used

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  • Combination for preparing negative temperature coefficient (NTC) thermistor chip and NTC thermistor made by using combination
  • Combination for preparing negative temperature coefficient (NTC) thermistor chip and NTC thermistor made by using combination
  • Combination for preparing negative temperature coefficient (NTC) thermistor chip and NTC thermistor made by using combination

Examples

Experimental program
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Effect test

Embodiment 1

[0088] Embodiment 1 The making of a kind of NTC thermistor

[0089] Described NTC thermistor is made according to above-mentioned two described manufacturing methods, wherein: the raw material that takes in the step (1) is: Mn 3 o 4 770g, Fe 2 o 3 55g, SiO 2 30g, NiO 110g.

[0090] The performance parameters of the NTC thermistor are shown in Table 1-4.

Embodiment 2

[0091] Embodiment 2 The making of a kind of NTC thermistor

[0092] Described NTC thermistor is made according to above-mentioned two described manufacturing methods, wherein: the raw material that takes in the step (1) is: Mn 3 o 4 790g, Fe 2 o 3 60g, SiO 2 35g, NiO 140g.

[0093] The performance parameters of the NTC thermistor are shown in Table 1-4.

Embodiment 3

[0094] Embodiment 3 The making of a kind of NTC thermistor

[0095] Described NTC thermistor is made according to above-mentioned two described manufacturing methods, wherein: the raw material that takes in the step (1) is: Mn 3 o 4 780g, Fe 2 o 3 58g, SiO 2 32g, NiO 130g.

[0096] The performance parameters of the NTC thermistor are shown in Table 1-4.

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Abstract

The invention discloses a combination for preparing a negative temperature coefficient (NTC) thermistor chip and an NTC thermistor made by using the combination, belonging to the field of thermistors. The combination comprises the following components in parts by weight: 770-790 parts of Mn3O4, 55-60 parts of Fe2O3, 30-35 parts of SiO2 and 110-140 parts of NiO, wherein all components are nano-powder and are chemically pure. The combination is made into chip slurry through the following steps of: weighing the raw materials according to the components and the content; evenly mixing the raw materials, pouring the mixture into a ball mill, adding water and grinding for 30-50 hours; dewatering and drying the ground raw materials; and adding adhesive into the dried raw materials and evenly agitating to form the chip slurry. The invention additionally discloses a method for making the NTC thermistor by using the chip slurry. By adjusting the proportions of all components in the combination for the NTC thermistor, the service life of the thermistor is prolonged, the measurement accuracy of the thermistor is improved and the use requirements of electrical appliances such as air conditioners can be better satisfied.

Description

technical field [0001] The invention relates to the field of thermistors, in particular to a composition for an NTC thermistor chip and an NTC thermistor of a chip made of the composition. Background technique [0002] Thermistors are a type of sensitive components. They are divided into PTC (Positive Temperature Coefficient, positive temperature coefficient) thermistors and NTC (Negative Temperature Coefficient, negative temperature coefficient) thermistors according to their temperature coefficients. A typical feature of a thermistor is that it is sensitive to temperature and exhibits different resistance values ​​at different temperatures. The higher the temperature of the PTC thermistor, the greater the resistance value, and the lower the resistance value of the NTC thermistor, both belong to semiconductor devices. [0003] NTC thermistor has the advantages of high sensitivity, fast response, small size, and easy remote control and measurement. It is widely used in refr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01C7/04C04B35/01C04B35/622
Inventor 苑广礼苑广军
Owner 合肥市恒新基电子有限公司
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