A kind of manufacturing method of vehicle gauge resistor and vehicle gauge resistor

Abstract

The invention relates to the technical field of electronic components, and discloses a method for manufacturing a car-gauge resistor and a car-gauge resistor. The method for manufacturing a car-gauge resistor selects a plurality of substrates whose aspect ratio satisfies a set range to manufacture the resistor. During production, the aspect ratio of the resistance layer on each substrate is equal, the same can of resistance paste can be used, and resistance layers with the same resistance value can be produced on different specifications, thus greatly reducing the inventory of resistance paste to be used after paste preparation type and quantity, and can greatly reduce the status quo of infrequently used resistance paste being wasted due to expiration, which greatly reduces the cost of use of resistance paste; by heating the substrate forming the front electrode and back electrode before making the resistance layer, removing The water vapor in the micropores of the substrate can reduce the air bubbles in the resistance layer, and improve the electrical performance of the resistance and the stability of the pulse performance. The vehicle gauge resistor disclosed by the invention has the characteristics of low cost, stable electrical performance, and highly uniform process control standards.

Description

technical field [0001] The invention relates to the technical field of electronic components, in particular to a method for manufacturing a car-gauge resistor and the car-gauge resistor. Background technique [0002] As a convenient and efficient means of transportation, automobiles have a history of more than 100 years. With the gradual reduction of petroleum raw materials and the continuous enhancement of people's awareness of environmental protection, more and more automobile manufacturers have invested in hybrid power and Development and production of new energy vehicles. With the advancement of science and technology, the development of the times and people's requirements for the comfort, intelligence, Internet of Vehicles and automatic driving of automobile products, the functions and complexity of automobiles are also increasing. Due to the increase in automobile functions, especially With the increase of electronic control functions, there are more and more various ...

AI Technical Summary

Problems solved by technology

The manufacturing process of ordinary thick film chip resistors is usually produced as follows. On the back of the substrate with horizontal and vertical score lines, first print a back electrode and dry it, and then print the front electrode on the front of the substrate and dry it. After sintering at a high temperature of 850°C, the resistance layer is printed between the front electrodes, and after drying and sintering, the first protective layer is printed on the surface of the resistance layer, and the resistance value is adjusted by laser after drying and sintering, and then on the first protective layer Print the second protective layer on the surface to completely cover the first protective layer and the resistance layer. After drying, print the code on the surface of the second protective layer, dry and sinter, and then go through folding strips, sputtering, folding particles, and nickel plating , tinning, magnetization, and package inspection to form finished resistors. The reliability of the resistors produced in this way is not high, mainly because ordinary chip thick film resistors have the following shortcomings in product design and manufacturing process:

Since the resistor paste has a storage period, it is easy to cause a lot of expired waste of resistor paste with resistance values ​​that are not commonly used, thereby increasing the manufacturing cost of resistors.

[0005] Second, after analyzing the resistance products of some well-known brands at home and abroad, it can be found that thick film chip resistors can be seen through slicing and grinding. On the resistance layer, there will be different degrees of pinholes and bubbles. The existence of pinholes will make the heat conduction of the resistor uneven, affect the processing performance of the resistor and the stability of the finished resistor performance, especially reduce the pulse performance of the resistor

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