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Thermistor manufactured by ceramic thin films and manufacturing method of thermistor

A technology of ceramic thin film and thermistor, applied in the direction of resistors with negative temperature coefficient, etc., can solve the problems of insufficient production efficiency, inconsistent shape and size, and low precision.

Active Publication Date: 2013-06-26
东莞市安培龙电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The products manufactured by this method have higher stability, but due to the inconsistent shape and size of the NTC beads, the resistance value is inconsistent and the accuracy is low
[0005] In order to overcome the defects of the above-mentioned methods, a method named "a mold for forming a thermistor and a method for manufacturing a thermistor" (patent number: 200910105625.3) proposed a A method of manufacturing strings of NTC beads using a special mold, so that the shape and size of the beads are the same, thus solving the problem of low precision
However, due to the need to use a syringe to inject ceramic slurry into many small cavities during the manufacturing process, the production efficiency is not high enough

Method used

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  • Thermistor manufactured by ceramic thin films and manufacturing method of thermistor
  • Thermistor manufactured by ceramic thin films and manufacturing method of thermistor
  • Thermistor manufactured by ceramic thin films and manufacturing method of thermistor

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Embodiment Construction

[0022] The method for manufacturing a thermistor by using a ceramic thin film will be described in detail below with reference to the accompanying drawings.

[0023] 1. If figure 1 Shown: Select the required ceramic film, cut it into a rectangular ceramic film (1), punch out uniformly distributed strip windows (2) on the rectangular film, and punch out film positioning holes (3) at the four corners of the rectangular film .

[0024] 2. If figure 2 As shown: on a rigid floor (4) whose length and width are 2 to 3 cm larger than the rectangular film, four positioning piles (5) are arranged corresponding to the positioning holes on the rectangular film; Distributed winding stakes (6).

[0025] 3. If image 3 Shown: a layer of rectangular ceramic film (1) is placed on the rigid base plate (4), and the positioning holes of the film are sleeved on the four positioning piles (5) of the rigid base plate.

[0026] 4. If Figure 4 Shown: the metal wire (7) is passed around the win...

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Abstract

The invention relates to a ceramic thermistor and a manufacturing method thereof, and particularly relates to a micro NTC (negative temperature coefficient) thermistor and a manufacturing method thereof. The thermistor manufactured by ceramic thin films is formed by clamping parallel metal wire leads between two layers of the ceramic thin films, integrally connecting the ceramic thin films with the metal wire leads via a process of 'hot isostatic pressing', then placing the ceramic thin films in a kiln and sintering at a high temperature, wherein the sintering temperature is 900-1200 DEG C, and the sintering time is 3-5 hours; and the used ceramic thin films are prepared from a ceramic slurry via a casting process, and the prescription of the ceramic slurry is decided by the types of thermistors. The manufacturing method of the thermistor comprises the following steps of: cutting the ceramic thin films, hot-pressing and compounding the ceramic thin films with the metal wire leads, parting off the ceramic thin films (with the leads), as well as sintering and packaging a ceramic component.

Description

Technical field: [0001] The invention relates to a ceramic thermistor and a manufacturing method thereof, in particular to a miniature NTC thermistor and a manufacturing method thereof. Background technique: [0002] Existing thermistor temperature sensors are divided into two categories according to the method of electrode formation: [0003] 1. Print silver palladium paste on both sides of the sintered NTC ceramic sheet, form electrodes after firing, and then cut into small square pieces of 1mm×1mm. The electrodes of each square piece are connected to the pins with gold paste, and then the small square piece One end of the chip and the pin is set in a thin glass tube, and sintered to form a bead-shaped thermistor. Since the stability of the silver-palladium electrode is not high enough at high temperature, a second process method has been produced. [0004] 2. Use two platinum wires with a diameter of 0.02-0.1mm to be placed in parallel with a distance of 0.15-0.75mm. Ap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C7/04
Inventor 邬若军
Owner 东莞市安培龙电子科技有限公司
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