Electronics Forum: electromigration (Page 1 of 6)

Electrical failures

Electronics Forum | Mon Feb 25 22:04:30 EST 2008 | davef

Here�s background on: * Electromigration: http://en.wikipedia.org/wiki/Electromigration * Dendrite: http://en.wikipedia.org/wiki/Dendrite_(crystal) For us, electromigration is the electrochemical process that creates dendrites. As a bonus, here's

SMT adhesive suggestions?

Electronics Forum | Fri Jul 20 12:28:47 EDT 2007 | dwanzek

Good luck. Loctite will work just fine if other combinations of variables do not allow voiding or electromigration.

Chemical Reaction

Electronics Forum | Sat Jun 23 07:34:26 EDT 2007 | davef

This sounds like a form of corrosion called electromigration. It creates cathode anodic filaments. They have a fern like shape because it is a metallic based crystal structure. Electromigration requires: * Difference of electrical potential * Chemica

Electromigration Testing

Electronics Forum | Wed Jun 30 18:12:59 EDT 2004 | crios

Thanks for the information. davef, I will search for and review the Ion Chromatography for Ionic Cleanliness test method. This definitely is the test I want to perform. Do you know what the IPC specification is using this test method? The outside

Re: Contamination causing shorts.

Electronics Forum | Fri Sep 24 10:19:41 EDT 1999 | C.K.

I need a memory jog. What is the term for the growth of conductive contamination after a board is in storage or field? I believe you're referring to "ELECTROMIGRATION."

Re: Contamination causing shorts.

Electronics Forum | Fri Sep 24 17:14:29 EDT 1999 | Dave F

I need a memory jog. What is the term for the growth of conductive contamination after a board is in storage or field? Charles: Both Chris and CK are correct, according to the SMTnet "Dictionary:" "Dendrite. Metallic filaments growing by elec

Re: Contamination causing shorts.

Electronics Forum | Tue Sep 28 12:00:38 EDT 1999 | -KH

I need a memory jog. What is the term for the growth of conductive contamination after a board is in storage or field? I believe you're referring to "ELECTROMIGRATION." Dendrites.

Electromigration Testing

Electronics Forum | Tue Aug 31 13:16:23 EDT 2004 | GS

Hi Davef, if by using Omegameter 600 SMD I am reading 1,56 microgram NaCL/sqcm, what is the real value I am measuring? considering the 14 sensitivity ?

Electromigration Testing

Electronics Forum | Mon Sep 06 08:38:44 EDT 2004 | davef

You're correct GS. Your's is a good cautionary tale for all NC flux users. Unfortunately, it's too easy to assume that boards and components are clean, even if our NC process is flawless.

Electromigration Testing

Electronics Forum | Wed Sep 15 17:13:53 EDT 2004 | GS

Do anyone of you know if are there any Standard (IPC, JEDEC, etc) telling how much can be the acceptable level of TIC (ugr/cm2 NaCl equivalent) allowed on surace of Connectors, Components,before to be assembled on PCB ? Many thanks Rgds GS

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