To prevent a short circuit between leads and between lead and metallic ring due to electro-conductive adhesives with the use of an airtight terminal for a small electronic component.

The airtight terminal has at least the metallic ring, the insulation member which fills the internal metallic ring and two leads which penetrate the insulation member and are fixed by the insulation member. The airtight terminal is provided with a convex part surrounding a respective circumference of two inner leads at least on the inner side face of insulation member.