Electronics Forum: blistering (Page 1 of 12)

Water Absorption of PCB

Electronics Forum | Thu Feb 15 22:55:45 EST 2007 | davef

Questions are: * Is the blistering in the solder mask or the laminate? * If the blistering is in the solder mask, what do the blisters look like [eg, size, quantity, distribution, etc]? * If the blistering is in the laminate, what do the blisters loo

Water Absorption of PCB

Electronics Forum | Wed Feb 21 05:52:17 EST 2007 | Stephen- SMT engineer trainee

Some of the blister in solder mask, normally 1 circle blister(about 1cm in Dim.) in each PCB. In addition, there are also blister in laminate, the also look like 1 circle blister(about 1cm in Dim.) in each PCB.

PCB Blistering / Delamination

Electronics Forum | Tue Jul 18 12:27:29 EDT 2006 | Nick

What are the root failures of PCB Blistering / Delamination? Could layers short together through vias or thru-holes?

ESD blister

Electronics Forum | Mon Jan 21 01:49:18 EST 2002 | chinaren

hello, One of THT connector we used in production line is packed in ESD blister from the supplier, and then the blister is kept in ESD box. and now the supplier wants to change the ESD blister to plastic material( NON ESD) but still in ESD box. whet


Electronics Forum | Wed Dec 21 11:49:50 EST 2005 | dlkearns1

We have small blisters all over the bottom side of a heatsink the measures apprx 4" x 12", flat surface. Is there any chance someone can refer me to some standard or specs for usability, personally I think these little blisters would be ok and not in

wave pallets

Electronics Forum | Sun Feb 22 08:23:57 EST 2009 | davef

On a wave solder pallet, we'd expect the metal parts that go through the pallet to be warmer than the pallet material, but we don't expect them to be warmer than the solder. We don't expect a well made board to blister at soldering temperature. So,

hole blister

Electronics Forum | Sun Sep 13 19:56:21 EDT 2009 | 89jeong

Hi All I have a pig problem after reflow. It is a blister in hole.It happend after reflow(Lead free solder) I touched the blister with tweezer. The plating was lifted off easily How do i do? What is a root casue? Drilling or plating? Is it possible

Brd(Electroylic Gold finishing) got blisters

Electronics Forum | Sat Aug 27 09:47:05 EDT 2005 | davef

From the pic, we see blistering, but none so close to via that we'd attribute the blistering to via, via plugging, or anything of the sort. When we see blisters like this, we think of a surface contaminant being present on the boards at the time of


Electronics Forum | Wed Dec 21 22:31:17 EST 2005 | davef

If we received heatsinks with blisters on the contact surface, like you describe, we'd reject them. We want that surface to be perfectly flat. Google "heatsink flatness" for more. For instance: http://www.heatsink-guide.com/content.php?content=hea

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]

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