Surge absorber and production method therefor

A surge absorber, comprising:

• an insulating part upon which is formed a conductive layer which is divided into two separate portions by a discharge gap;
• a pair of terminal electrodes which are arranged to oppose said insulating part;
• an insulating tube at the ends of which said terminal electrodes are arranged, and which seals said insulating part in its interior along with seal gases;
• and
• a conductive portion provided at least between said terminal electrodes and said conductive layer and which is made of a deformable materials,
• wherein, at each end of the insulating part, said conductive portion comprises a support portion which projects away from the surface of the terminal electrode along an axial direction of the insulating tube in a region between an outer surface of the insulating part and an inner surface of the insulating tube, and which supports an end of said insulating part along its outer circumferential surface, and a portion of the conductive portion which is disposed between an end surface of the insulating part and the terminal electrode has a smaller thickness than the support portion.