Electronics Forum: solder mask blisters (Page 1 of 155)

Brd(Electroylic Gold finishing) got blisters

Electronics Forum | Thu Aug 25 10:17:48 EDT 2005 | davef

Send the pic to dave5252 at hotmail.com [you can't send pic through the SMTnet email thing] For more on via plugging, tenting, capping ... look here: http://www.merix.com/technology.php?section=processes&page=pdf/Via_Fill_Plug.pdf Something, a voi

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

Brd(Electroylic Gold finishing) got blisters

Electronics Forum | Wed Aug 24 21:57:45 EDT 2005 | adeline_ko

The blistering is around the plugging via. I can forward you the pic. For the plugging process, I'm not too sure how they plug. What is the correct practise for the plugging via. Now, what they did is. They will do a tenting process for both side.

Small blister, solder mask

Electronics Forum | Mon Jun 28 22:30:06 EDT 2004 | davef

If you find it at the end of your process and you find no defects, work on something else. Now if you are a smooth talker and seek a little adventure in life, you might be able to finesse this thing into a road trip to take a tour of your board fa

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

solder mask

Electronics Forum | Mon Aug 09 04:15:33 EDT 1999 | Jacqueline Coia

I am having cleaning problems when processing PCB's which have TAIYO solder mask on them. After processing, hand soldering and cleaning, a sticky residue is remains, resulting in a cosmetically poor finish with tide marks etc. Other soldermasks do no

solder mask removal

Electronics Forum | Wed Jan 05 14:45:14 EST 2000 | Hoyt Moore

Does anybody know how to remove solder mask from pads that were masked over.

Dispensable peelable solder mask

Electronics Forum | Fri May 21 09:48:30 EDT 2010 | tomg_fla

Am looking for a dispensable water soluble solder mask or peelable solder mask that can be dispensed and be run through a reflow oven with no swelling or degradation. Any leads on any materials or manufacturers to contact?

Accidental solder mask

Electronics Forum | Wed Dec 18 08:38:17 EST 2002 | davef

Thanks Tim. Additional thoughts are: * We've talked here on SMTnet about hole fill previously. * That your ability to get hole fill is probably limited by mask in the hole makes us very uneasy, because hole could have varying levels of solder mask i

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