Patent ID: 9743539
Date: 2017-08-22
CPC Classifications: B23K,H05K

Claim:
1. An in-vehicle electronic module, comprising: a circuit board on which an electronic component is mounted; a box type case or a protective member made of mold resin that accommodates and protects the circuit board from surrounding environment; and a connector accommodating member that is integrally formed with the protective member and has an opening space for accommodating a mating connector, wherein the in-vehicle electronic module has a connection structure in which an end portion of the circuit board on which the electronic component is not mounted is protruded from the protective member to the opening space of the connector accommodating member and the end portion of the board is inserted into the mating connector to obtain electrical continuity, and a connection terminal of the board has a structure of Cu wiring/Cu—Sn reaction layer/Sn-based alloy layer containing an Ag—Sn intermetallic compound.