| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic circuit board, an electronic component, an electronic circuit device and a manufacturing method of them, wherein repair of an electronic component like an LSI is facilitated and a connecting method of low cost which has high reliability and reduces time for connection is used. SOLUTION: In the electronic circuit board 5, having an electrode terminal 4 to be connected with an electronic component 1, the electrode terminal 4 has a metal protrusion 3, which is mainly composed of intermetallic compound. The intermetallic compound is a copper-tin based compound. |
