Electronics Forum: blister (Page 4 of 12)

Blistering issue, mixed LF/SnPb process

Electronics Forum | Fri Jul 28 09:24:54 EDT 2006 | Chunks

Yur profile looks OK for a leaded paste. It may be tyour paste as stated below. Is this a new problem? Also, have you profiled your oven lately? Could be one zone out of control.

Blistering issue, mixed LF/SnPb process

Electronics Forum | Fri Jul 28 09:33:14 EDT 2006 | pavel_murtishev

Oven is controlled properly. We run a lot of products at this line. Moreover, same problem appeared at other production line (ovens are different). Yes, problem is new; I never saw this defect before. BR, Pavel

Blistering issue, mixed LF/SnPb process

Electronics Forum | Fri Jul 28 09:41:13 EDT 2006 | Chunks

Ah, part issue. Good luck, unless you saw these parts being made, you can only speculate.

Blistering issue, mixed LF/SnPb process

Electronics Forum | Fri Jul 28 11:37:29 EDT 2006 | Chunks

Hi Rob, I guess what I meant was if you know it's this resistor that it only happens too, you may have a tuff time finding out why it's only this part doing.

Blistering issue, mixed LF/SnPb process

Electronics Forum | Fri Jul 28 11:48:55 EDT 2006 | Rob

Sorry Chunks! Not really with it - Friday afternoon, with 10 minutes to go. From experience I'd go with termination coating problem, linked a a few values, as they batch coat by value - so a 220R may be affected, but not a 100R.

Blistering issue, mixed LF/SnPb process

Electronics Forum | Sat Jul 29 08:52:09 EDT 2006 | davef

This recipe is nice for leaded soldering. The time above liquidous plus 20*C is too short for mixed alloy soldering. Remember all that nonleaded stuff that you add to the solder acts to increase the liquidous temperature of the alloy. Try slowing

Blistering issue, mixed LF/SnPb process

Electronics Forum | Mon Jul 31 15:03:38 EDT 2006 | kris

Did you try a different lot of components or a different vendor of the components to see if the problem remains ?

TITAN Boardhouse Issues????

Electronics Forum | Wed Feb 28 14:25:39 EST 2007 | Brandon

Has anyone here had issues with Titan's (Board house) Leadfree / Rohs compliant boards blistering at lead free temps? MAX temp 250c thx

Question of delamination in PCB

Electronics Forum | Sat May 02 08:48:32 EDT 2009 | davef

You have a board defect. Any moisture and/or organic contaminants trapped by the solder resist during lamination may cause solder mask delamination, blistering and/or adhesion loss during subsequent soldering operations or during extended use.

PCB Delamination in PTH hole

Electronics Forum | Mon Oct 26 12:40:08 EDT 2009 | awtm

pls find attached photo from Supplier saying that the failure at pth hole was due to blistering caused by moiture evaporate rapidly resulting delamination occur on FR-4 material from an old PCB (3yrs). Pls advise if attached picture confirms such co


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