Electronics Forum: blister (Page 2 of 12)

Blistering of PCB during lead free assembly

Electronics Forum | Thu Jan 19 21:43:33 EST 2006 | davef

Specifically, what element of the bare board is blistering? Tg of 140 could be acceptable. Search the fine SMTnet Archives for background on decomposition temperature [td]

Blistering of PCB during lead free assembly

Electronics Forum | Fri Jan 20 13:25:07 EST 2006 | Gary Kemp

The mask/copper layer is exhibiting popcorn blistering following reflow. With profiling we know that the assembly does not see anything close to 250 C, rather around 238 C.

Re: PCB blister(delamination)

Electronics Forum | Thu Jul 09 11:20:24 EDT 1998 | Justin Medernach

I am looking for a little enlightement with an issue that we have been seeing. We have printed curcuit board with multilayer and HAL finished. After reflow soldering, we have often "blister phenomenon". Our reflow profile is normal. Factory

Brd(Electroylic Gold finishing) got blisters

Electronics Forum | Tue Aug 23 03:42:10 EDT 2005 | Adeline

presently, the production facing this problem. We has couple of brd which is electroylic gold finishing with plug via. The brd has blister after the PCBA (in lead free temperature, 265 degree) Some time, bare brd already has the blisters. But most of

Blistering issue, mixed LF/SnPb process

Electronics Forum | Fri Jul 28 08:34:47 EDT 2006 | Chunks

What does your reflow profile look like?

Blistering issue, mixed LF/SnPb process

Electronics Forum | Fri Jul 28 12:37:55 EDT 2006 | Chunks

Yes I agree with the termination problem and the Friday thing!

Blistering issue, mixed LF/SnPb process

Electronics Forum | Fri Jul 28 13:55:12 EDT 2006 | mumtaz

Please. Why over engineer this the end. Simply wave solder them!

Blistering of PCB during lead free assembly

Electronics Forum | Thu Jan 19 20:40:52 EST 2006 | Gary Kemp

We are experiencing a blistering problem during our process of lead free assembly. The customer has supplied us with the bare fab rated at 140 Tg. I am under the assumption that the Tg rating should at minimum be 170. Does anyone know if there is

Small blister, solder mask

Electronics Forum | Wed Jun 23 13:34:29 EDT 2004 | df_indy

I am four weeks into my new job, there always seems to be some issues here with PCB every week. Today while I was checking some assemblies with micro-scope, I found a lot of tiny bubbles/blisters on the board. They are just little dots if you look

Brd(Electroylic Gold finishing) got blisters

Electronics Forum | Tue Aug 23 22:50:09 EDT 2005 | adeline_ko

My process guy told me that. Due to black spot issue, brd with BGA must use electrolytic finishing. And when we had this finishing with plug via, the blister issue pop out. My supplier claim that this is due to the plug via. Which I don't know how


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