Patent ID: 7087441

Claim:
A method of making a circuitized substrate, said method comprising: providing a substrate including at least one dielectric layer selected from the group of materials consisting of fiberglass-reinforced epoxy resin, polytetrafluoroethylene, polyimide, polyamide, cyanate resin, photoimageable material, and combinations thereof; providing first and second conductors on said dielectric layer of said substrate and first and second PTHs within said dielectric layer of said substrate, said first conductor and said first PTH of a different metal or metal alloy than said second conductor and said second PTH; forming a conductive commoning layer on said substrate over said first and second conductors and PTHs and said dielectric layer; depositing a first quantity of solder material on said first conductor and said first PTH using an electro-plating process utilizing said commoning layer; and thereafter depositing a second quantity of solder material on said second conductor and said second PTH using an electro-plating process also utilizing said same commoning layer.