電子回路モジュール部品及び電子回路モジュール部品の製造方法

摘要

PROBLEM TO BE SOLVED: To improve the heat resistance and the cyclic bending strength of a joining metal for joining a terminal electrode of an electronic component of an electronic circuit module component with a terminal electrode of a circuit board.SOLUTION: An electronic circuit module component includes: an electronic component 2; a circuit board 3 mounted with the electronic component 2; and joining metal 5 which is interposed between a terminal electrode 2T of the electronic component 2 and a terminal electrode 3T of the circuit board 3, and which joins both. In the joining metal 5, a main phase mainly consisting of Ni-Sn alloy and a second phase mainly consisting of either Bi or Zn are dispersed.