High stability thermistor processing technology

Abstract

The invention discloses a high-stability thermistor manufacturing process which comprises the following steps: firstly, manufacturing an inner layer on a thermistor material, performing laser treatment on a side of a gong groove, pressing a prepreg with a copper foil, filling the gong groove with a resin, further performing laser treatment on the other side of the gong groove, pressing the prepregwith the copper foil, filling the gong groove with the resin, wrapping a thermistor inside the gong groove completely, and finally performing patterning, thereby obtaining a finished product of the thermistor. By adopting the high-stability thermistor manufacturing process, the thermistor is manufactured in modes that groove holes are formed through laser and mechanical means and the resin is repeatedly pressed and supplied, the thermistor is surrounded by the resin, very high reliability and stability are achieved, the characteristics that the resistance of a thermistor plate is increased incase of heat and large current and normal resistance is recovered after the heat and the current are recovered are met, then relatively high market requirements are met, and product diversity is achieved.

Description

technical field [0001] The invention relates to a high-stability thermistor processing technology. Background technique [0002] Thermistor (PTC device) is a polymer positive temperature coefficient device, which can protect the circuit when the current surge is too large and the temperature is too high. When in use, it is connected in series in the circuit. Under normal circumstances, its resistance value is very small, and its loss is also very small, which does not affect the normal operation of the circuit; but if an overcurrent (such as a short circuit) occurs and its temperature rises, it will The resistance value also rises sharply, to limit the current, so as to avoid damage to the components in the circuit. When the fault is eliminated, the temperature of the PPTC device drops automatically and returns to a low-resistance state, so the PPTC device is also called a resettable fuse. [0003] The working principle of the thermistor is: the self-recovery fuse is made ...

AI Technical Summary

Problems solved by technology

[0005] However, there are two main disadvantages of thermistors: ①The components are easy to age and have poor stability; ②The consistency of the components is poor and the interchangeability is poor

Therefore, for the production of thermistor boards, although many manufacturers now produce them, the traditional production methods for the production of high-reliability thermistor boards have low production efficiency, require a lot of manpower and material resources, and such production The quality of the products produced is low, and it is impossible to produce high-quality products in large quantities, etc.

Images