A kind of NTC thermistor and manufacturing method
A manufacturing method and technology of thermistors, applied in the direction of resistors, non-adjustable metal resistors, resistors with negative temperature coefficients, etc., can solve the problems of increased manufacturing costs, high manufacturing costs, and long production cycles, and achieve production Short cycle, flexible design and adjustment, and the effect of meeting diverse needs
Active Publication Date: 2018-06-26
SHENZHEN SUNLORD ELECTRONICS
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Problems solved by technology
However, these production methods have disadvantages. The internal electrode design uses silver-palladium electrodes, and the manufacturing cost is relatively high; the method of adjusting the resistivity of a single component has a long production cycle and a high scrap rate, which virtually increases the manufacturing cost.
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[0053] Take the preferred combination of the Mn-Cu-Ni-O system for both the first material diaphragm A and the second material diaphragm B as an example, where the components of the first material diaphragm A and the second material diaphragm B are added The amount is different, the resistivity of the first material diaphragm A and the second material diaphragm B are different. The optimal sintering temperature of the first material diaphragm A is about 1220°C, and the optimal sintering temperature of the second material diaphragm B is about 1180°C. During production, the first material film A is divided into equal layers and stacked on both sides of the B material, and then pressed together.
[0054] With the same layer thickness, according to the different number of layers of the first material diaphragm A and the second material diaphragm B during compounding, three compounding schemes are selected, namely the total of the first material diaphragm A and the second material dia...
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Abstract
The invention discloses an NTC thermistor and a manufacturing method therefor. The NTC thermistor comprises a thermal sensitive ceramic substrate and an electrode, wherein the thermal sensitive ceramic substrate is obtained by sintering a first material membrane laminating layer and a second material membrane laminating layer that are laminated; the electrode is formed on the surface of the thermal sensitive ceramic substrate; the first material membrane laminating layer comprises an upper side laminating layer part and a lower side laminating layer part; the second material membrane laminating layer comprises a middle laminating layer part; the middle laminating layer part is sandwiched by the upper side laminating layer part and the lower side laminating layer part to form a sandwich structure; the first material membrane laminating layer and the second material membrane laminating layer are different in electric resistivity; and the sintering temperature of the first material membrane laminating layer is higher than that of the second material membrane laminating layer. According to the NTC thermistor and the manufacturing method therefor, diversified requirements of components and parts on different electrical performances can be satisfied conveniently and flexibly.
Description
Technical field [0001] The invention relates to an NTC thermistor and a manufacturing method. Background technique [0002] NTC thermistors are widely used in medical, automotive, home appliances, communications and other fields because of their temperature-sensitive characteristics, functional reliability, strong interchangeability, low price, small size and easy mounting. [0003] Due to the differences in the circuit design of various terminal manufacturers, the electrical performance requirements of the circuit-matched components are also different, so the electrical specifications of the products are more complicated. At present, most domestic and foreign manufacturers use the internal electrode structure and adjust the resistivity of a single component to meet customer needs. However, these manufacturing methods have drawbacks. The internal electrode design uses silver-palladium electrodes, which has a high manufacturing cost; the method of adjusting the resistivity of a sin...
Claims
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IPC IPC(8): H01C7/04
CPCH01C7/041H01C7/043
Inventor 黄飞包汉青王清华
Owner SHENZHEN SUNLORD ELECTRONICS