| 摘要 |
PURPOSE:To obtain a rust preventive treatment coated layer excellent in heat resistance and solvent resistance by constituting a rust preventive treatment coated layer out of a coated layer, as a lower layer, which has heat resistance or solvent resistance and a layer, as an upper layer, which is excellent in lubricating ability. CONSTITUTION:A rust preventive treatment coated layer 14 formed in processing A is provided on a gold plated layer 12 formed on a nickel plated layer 11 formed on a connector base material 10, and a rust preventive treatment layer 15 formed in processing B is provided on the rust preventive treatment layer 14. Since the connector 10 is coated with a rust preventive treatment layer whose surface layer is excellent in lubricating ability and abrasion resistance like this, insertion force when inserting an IC package, etc., into a socket, etc., can be decreased and it can be mounted or removed easily. Further, the rust preventive treatment to improve lubricating ability is applied after soldering and cleaning, so lubricating ability can be improved. |
