Patent ID: 7604833

Claim:
A method of manufacturing an electronic part in which at least one circuit element is formed on a surface of a ceramic substrate and conductive balls are used as terminals of the electronic part, comprising: a first step of forming at least one circuit element on the surface of a large ceramic substrate including division grooves longitudinally and laterally provided on the surface thereof; a second step of fixing the conductive balls to terminal portions of the circuit element; and a third step of applying stress to the large ceramic substrate to open the division grooves, to divide the substrate, the first, second, and third steps being performed in the stated order, wherein the third step is performed in a state in which a buffer member is located on the surface of the large ceramic substrate to which the conductive balls are fixed, the buffer member having a concave portion to house the conductive balls and a convex portion in contact with the surface of the substrate and/or the circuit element and by doing so, all stress to be applied in the third step is applied to the substrate and/or the circuit element.