Electronics Forum: peeling mask (Page 1 of 8)

Conformal Coat peeling

Electronics Forum | Thu Apr 09 06:28:11 EDT 2009 | qualityguy

We have different Solder mask 'gloss' and 'satin' the gloss has a surface energy =40 dynes. The test evidence to date is strong correlation between surface energy, mask type, HASS failure

Conformal Coat peeling

Electronics Forum | Tue Apr 07 15:36:15 EDT 2009 | gtemkin

Most of the conformal coating manufacturers recommend verifying the compatibility of their coating with the solder mask, so it's no surprise that occassionally there will be such issues. Are you sure your conformal coat is completely cured? If your

Conformal Coat peeling

Electronics Forum | Sun Apr 05 12:30:22 EDT 2009 | qualityguy

Forum: Has anyone experience conformal coat peeling after HASS and the failure mechanism being low surface energy attributed to the solder mask?

Conformal Coat peeling

Electronics Forum | Fri Apr 10 07:52:16 EDT 2009 | davef

On cure checking, we have this undated note from Jack Crawford at IPC * IPC-SM-840C "Qualification and Performance of Permanent Solder Mask" has several Test Methods for different types of solder resist material, but probably the only applicable one

solder mask peel off

Electronics Forum | Wed Nov 20 01:38:53 EST 2019 | ajspec

Hi, i'm facing solder mask peel off but limited to the solder defined pad only(opening area). no peel off on the other area and it happened on electroless nickel immersion gold finishing only. for other finishing is not affected. kindly advise if you

solder mask peel off

Electronics Forum | Wed Dec 11 11:26:25 EST 2019 | SMTA-Norah

Yes, a polite complaint to our board shop later and the next batch didn't have that problem at least. I'm not convinced it's an ENIG issue as there was variability panel to panel in the first place.

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

Re: water soluble mask

Electronics Forum | Mon Sep 27 08:52:11 EDT 1999 | Brian

| i had a problem here, during the wave soldering process, we apply a water soluble mask on the gold finger to protect it from contamination. But after washing, there is still some mask left on the gold finger. | Can anyone pls advise is there any pa

Re: water soluble solder mask

Electronics Forum | Wed Oct 13 14:27:08 EDT 1999 | mikeh

Dave F, We are currently using a latex based ambient/thermal cure material that is applied by hand or automated dispensing equipment. Printing is an option for us, but we have not had much luck with this particular material. The mask is peeled off a

no-clean mask for gold fingers

Electronics Forum | Sat Jan 23 12:37:35 EST 1999 | parag palshikar

hi, i am working towards developing a no-clean process for a customer at contract manufacturing facility. the assemblies have gold fingers on them. these are masked to prevent from any damage to them during reflow soldering. the earlier process ut

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