TIP SURGE ABSORBER AND METHOD OF MANUFACTURING THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a nondegrading tip surge absorber having stabilized discharge start voltage without being influenced by a gap width and having the long service life. SOLUTION: In this tip surge absorber 10 having an insulating substrate 11 for forming a pair of more discharge electrodes 12, a cover body 14 for covering the surface of the insulating substrate 11 so as to be electrically continuable with the discharge electrodes 12 and terminal electrodes 16 connected so as to be electrically continuable with the discharge electrodes 12 and forming a discharge space 15 between the insulating substrate 11 and the cover body 14, the cover body 14 is formed of a mixture of a conductive material and an insulating material. Since discharge is started in a large number of gaps formed in the cove body 14 composed of the mixture of the conductive material and the insulating material, there is no need to strictly control the gap width, so that the tip surge absorber 10 having stabilized discharge start voltage can be easily obtained.