The thin wafer(such as BOC) is often cracked easily after Die-Attach process and large numbers of products in some semiconductor company failed as a result of crack.So it is urgent to get the solution to assure the qu...The thin wafer(such as BOC) is often cracked easily after Die-Attach process and large numbers of products in some semiconductor company failed as a result of crack.So it is urgent to get the solution to assure the quality and increase the yield.This article explained the relation of crack,the chip strength,as well as Die-Attach pin-up speed and how to solve that issue.For example,additional polishing process can significantly decrease the grind mark damage;pin-up speed optimization can make pin-up force best.So linear crack of thin chip can be avoided effectively.展开更多
The character of Sn-Bi plating chips,such as the effect of whisker preventing, solder ability,temperature cycle(T/C) test and thermal humidity bias(THB) test result was introduced.The research result shows that the Sn...The character of Sn-Bi plating chips,such as the effect of whisker preventing, solder ability,temperature cycle(T/C) test and thermal humidity bias(THB) test result was introduced.The research result shows that the Sn-Bi plating chips have good effect of prevent whisker from growing,these chips can pass the T/C test and THB test.展开更多
文摘The thin wafer(such as BOC) is often cracked easily after Die-Attach process and large numbers of products in some semiconductor company failed as a result of crack.So it is urgent to get the solution to assure the quality and increase the yield.This article explained the relation of crack,the chip strength,as well as Die-Attach pin-up speed and how to solve that issue.For example,additional polishing process can significantly decrease the grind mark damage;pin-up speed optimization can make pin-up force best.So linear crack of thin chip can be avoided effectively.
文摘The character of Sn-Bi plating chips,such as the effect of whisker preventing, solder ability,temperature cycle(T/C) test and thermal humidity bias(THB) test result was introduced.The research result shows that the Sn-Bi plating chips have good effect of prevent whisker from growing,these chips can pass the T/C test and THB test.
