Piezoresistor structure

The utility model relates to a piezoresistor which is mainly provided with a ceramic body and a conductive structure for being connected with the outside. Wherein the ceramic body is provided with twoopposite surfaces and a side surface connected with the two surfaces; at least one protrusion is formed on at least one surface close to the side face, the surface of the ceramic body is made to be in a non-planar shape through the protrusions, and by means of the structure, flashover flames can be restrained in the surge impact process, namely the surge impact capacity of the piezoresistor can be improved, and the service life of the piezoresistor can be prolonged. In addition, due to the structural design, the ceramic body can be prevented from being sintered and bonded due to full-plane stacking and sheet arrangement among the sheets in the sintering stage of the green body, the post-processing procedure is increased, and the reject ratio is reduced. 本实用新型的压敏电阻主要具有一陶瓷本体以及一供与外部连接的导电结构，其中，该陶瓷本体具有二个相对的表面以及连接二表面的侧面，至少一表面靠近该侧面处形成有至少一突起，借由该突起让陶瓷本体的表面形成非平面状，有此结构于突波冲击时，能抑制飞弧火光的产生，也就是能提高压敏电阻的突波冲击能力与寿命。此外，此结构设计可避免陶瓷本体于生胚的烧结阶段，因片与片之间全平面堆叠排片而致烧结粘片，增加后处理的工序与不良率。