High-joule type voltage dependent resistor and production method thereof

The invention discloses a high-joule type voltage dependent resistor and a production method thereof. The voltage dependent resistor mainly comprises ZnO, and then raw materials of Bi2O3, Co3O4, Sb2O3, MnCO3, Ni2O3, ZrO2, Y2O3, SiO2, SnO2, MgO, H3BO3, Al(NO3)3.9H2O, AgNO3 and home-made ultrafine ZnTiNb2O8 powder are added to obtain the voltage dependent resistor. The production method comprises the steps that the ultrafine ZnTiNb2O8 powder is self-produced by using a conventional solid-phase synthesis method; then the ultrafine ZnTiNb2O8 powder, other additives and ZnO powder are subjected to ball-milling and mixed; and processes such as spray granulation, dry-pressing molding, binder removal and sintering are achieved to obtain a sintered ceramic chip, and the sintered ceramic chip is subjected to screen printing of silver paste, reduced, welded and packaged, so that the high-joule type voltage dependent resistor is obtained. According to the production method, the process is simple, and the produced voltage dependent resistor is low in cost, good in aging performance, high in combination wave resistance and energy density, environment-friendly and capable of achieving mass production.