Patent ID: 6971160

Claim:
Computer aided, low grounding impedance and efficient-cooling method of disposing a substrate-received hybrid electronic circuit device on a device-supporting metallic carrier member, said method comprising the steps of: segregating a selected length of metallic carrier member stock from an extended length of said stock; defining in computer code an array of milling machine cutter paths extending across an upper surface of said selected length of metallic carrier member stock, from an open end of a carrier recess well to be milled in said metallic carrier member upper surface; said defining in computer code the array of milling machine cutter paths including a plurality of milling machine cutter operation-free upstanding metallic carrier member pillar regions selectively disposed across a bottom surface of said recess well in response to pillar region-defining coding in said computer code; machining said recess well, with recess well remainder areas comprising said upstanding pillar regions, into said metallic carrier member stock using lateral movements of said milling machine cutter controlled by said computer code; fabricating a carrier recess well-conforming, conductor-clad, electrically insulating, hybrid electrical circuit device substrate member from a blank of said substrate member stock using a milling machine also controlled by the computer code; said fabricated hybrid electrical circuit device substrate member including substrate-piercing hole members disposed therein in clad conductor locations registered with said metallic carrier member pillar regions; and attaching said hybrid electrical circuit device substrate member to said metallic carrier member within said carrier recess well using heat responsive electrically conductive attachment material; said attaching step including forming attachment material bonds between said clad conductor and said upstanding metallic carrier member pillar regions at said substrate-piercing hole members.