Patent ID: 7372357

Claim:
A varistor body containing a varistor material, wherein the varistor material has a composition containing ZnO as a main component, and Co, Pr, and Zr as auxiliary components, and an analysis of the varistor body in a depth direction from a surface thereof satisfies the formula (1) and (2): 0.4 ×Z 1 /Z 0 +0.5 ≦P 1 /P 0 ≦0.4 ×Z 1 /Z 0 +0.9 (1) 1 <Z 1 /Z 0 <2.2 (2) where, Z 0 is a Zr content at a reference depth where the Zr content becomes almost constant, Z 1 is a Zr content at a level of 2 μm at a surface side above the reference depth, P 0 is a Pr content at the reference depth, and P 1 is a Pr content at the level of 2 μm at the surface side above the reference depth.