Alexander Coucoulas

Alexander Coucoulas is an American inventor, research engineer, and author. He was named "father of thermosonic bonding" by George Harman,[1] the world's foremost authority on wire bonding, where he referenced Coucoulas's leading edge publications in his book, Wire Bonding In Microelectronics.[2][3] A thermosonic bond is formed using a set of parameters which include ultrasonic, thermal and mechanical (force) energies.

Thermosonic bonding is widely used to electrically connect silicon integrated circuit microprocessor chips[4][5] into computers as well as a myriad of other electronic devices that require wire bonding.

Wires connected to a silicon integrated circuit using thermosonic bonding

As a result of Coucoulas introducing thermosonic bonding lead wires in the early 1960s, its applications and scientific investigations by researchers throughout the world have grown as confirmed by the thousands of Google search-sites. The all-important proven reliability of thermosonic bonding, as confirmed by these investigations, has made it the process of choice for connecting these crucially important electronic components. And since relatively low bonding parameters were shown to form reliable thermosonic bonds, the integrity of the fragile silicon integrated circuit chip central processor unit or CPU, is assured throughout its intended lifetime use as the "brains" of the computer.

  1. ^ Harman, G., Wire Bonding In Microelectronics, McGraw-Hill, Chapt. 2, pg.36, also search Coucoulas at https://www.amazon.com/WIRE-BONDING-MICROELECTRONICS-3-E/dp/0071476237/ref=sr_1_1?s=books&ie=UTF8&qid=1354948679&sr=1-1&keywords=wire+bonding+in+microelectronics#_ search Coucoulas
  2. ^ Coucoulas, A., Trans. Metallurgical Society of AIME, "Ultrasonic Welding of Aluminum Leads to Tantalum Thin Films", 1966, pp. 587–589. abstract https://sites.google.com/site/coucoulasthermosonicbondalta
  3. ^ Coucoulas, A., "Hot Work Ultrasonic Bonding – A Method Of Facilitating Metal Flow By Restoration Processes", Proc. 20th IEEE Electronic Components Conf. Washington, D.C., May 1970, pp. 549–556.https://sites.google.com/site/hotworkultrasonicbonding
  4. ^ Cite error: The named reference one was invoked but never defined (see the help page).
  5. ^ T.R. Reid, "The Chip: How Two Americans Invented the Microchip and Launched a Revolution"