The Electronic Materials Handbook, Volume 1, Published by ASM International, copyright 1989 has a chapter dedicated to die attach methods, advantages/disadvantages etc. I've found this to be a very useful reference book in general. Tim Roback Senior Supervisor, Component Engineering Allen-Bradley/Rockwell Automation Milwaukee, WI ---------- From: Denis Meloche To: tfroback; TechNet Subject: [TECHNET] Die Attach