Over-voltage protection device

Abstract

An over-voltage protection device includes a substrate, a voltage variable material, and an electrode set. A recess is formed on the surface of the substrate, and the voltage variable material is disposed in the recess. The voltage variable material includes an insulated metal material, a perovskite-based compound, and a silicone-containing resin. The perovskite-based compound is selected from the group consisting of calcium titanate, strontium titanate, barium titanate, and combinations thereof. The total volume of the voltage variable material is taken as 100%, and the perovskite-based compound accounts for 0.5% to 4.5%. The electrode set includes a first electrode and a second electrode respectively connected to two terminals of the voltage variable material.

Dependencies are inferred from the claim text.