Electronics Forum: die surface crack (Page 1 of 16)

Soldering die to heatsinks

Electronics Forum | Thu Apr 16 08:07:05 EDT 1998 | Stan

Currently I am in the buisness of soldering bare die to the top surface of a copper heat sink. Is any one else have some exprience in this process that can help. We heat a copper slug through a contolled atmosphere, place a preform then a bare die.

pbga substrate crack vision system

Electronics Forum | Thu Sep 24 18:57:03 EDT 2009 | davef

From "siliconfareast.com": Basic Die Cracking FA Flow 1) Failure Information/Device and Lot History Review. Understand the customer's description of the failure, i.e., the failure mode, where it was encountered, what conditions the sample was subject

Re: Soldering die to heatsinks

Electronics Forum | Fri Apr 17 14:08:44 EDT 1998 | Earl Moon

| Currently I am in the buisness of soldering bare die to the top surface of a copper heat sink. Is any one else | have some exprience in this process that can help. We heat a copper slug through a contolled atmosphere, place a preform then a bare

lead free solder crack

Electronics Forum | Wed Feb 20 23:17:34 EST 2002 | surachai

I AM JUST EVALUATION LEAD FREE EVALUATION AND FOUND THE BIG PROBLEM OF SOLDER CRACK BETWEEN TERMINAL OF COMPONENT AND THE INTERMETALLIC LAYER OF LEAD FREE ALLOY BUT DON'T FIND ANY CRACK BETWEEN SOLDER AND SURFACE OF PCB , COULD YOU HELP ME VERIFY T

pbga substrate crack vision system

Electronics Forum | Thu Sep 24 09:25:24 EDT 2009 | davef

What do you mean by "substrate?" Is it: * Semiconductor die * BT circuit board interposer Is the BGA package: * Encapsulated * Mounted on a circuit board

Re: Solder surface tension

Electronics Forum | Sat Oct 09 09:07:48 EDT 1999 | Brian

| | | Can anyone tell me the formula/method to determine | | | the amount of weight that solder's surface tension can support. | | | (ie: Maximum weight of components soldered onto a bottom side | | | of a board during a top side reflow on a Paste/Pa

Re: Solder surface tension

Electronics Forum | Sat Oct 09 09:18:21 EDT 1999 | Dave F

| | | | Can anyone tell me the formula/method to determine | | | | the amount of weight that solder's surface tension can support. | | | | (ie: Maximum weight of components soldered onto a bottom side | | | | of a board during a top side reflow on a

Re: Solder surface tension

Electronics Forum | Tue Oct 12 05:09:13 EDT 1999 | Brian

| | | | | | | Can anyone tell me the formula/method to determine | | | | | | | the amount of weight that solder's surface tension can support. | | | | | | | (ie: Maximum weight of components soldered onto a bottom side | | | | | | | of a board during

Re: Solder surface tension

Electronics Forum | Sat Oct 09 10:30:24 EDT 1999 | bix

| | | | | Can anyone tell me the formula/method to determine | | | | | the amount of weight that solder's surface tension can support. | | | | | (ie: Maximum weight of components soldered onto a bottom side | | | | | of a board during a top side refl

Re: Solder surface tension

Electronics Forum | Mon Oct 11 12:49:11 EDT 1999 | John Thorup

| | | | | | Can anyone tell me the formula/method to determine | | | | | | the amount of weight that solder's surface tension can support. | | | | | | (ie: Maximum weight of components soldered onto a bottom side | | | | | | of a board during a top s

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