Hi Ed,
Here you go:
http://stevezeva.homestead.com/Ed_BP.jpg
Steve
On Thu, Oct 8, 2015 at 9:08 AM, Ed Popielarski <[log in to unmask]>
wrote:
> Hi Steve,
>
>
>
> Could you please post the attached?
>
>
>
> Ed Popielarski
>
> Engineering Manager
>
>
>
> 970 NE 21st Ct.
>
> Oak Harbor, Wa. 98277
>
>
>
> Ph: 360-675-1322
>
> Fx: 206-624-0695
>
> Cl: 949-581-6601
>
>
>
>
>
>
>
> “It's one kind of victory to slay a beast, move a mountain, and
> cross a chasm, but it's another kind altogether to realize that the beast,
> the mountain, and the chasm were of your own design.”
>
>
> https://maps.google.com/maps/myplaces?hl=en&ll=48.315753,-122.643578&spn=0.011188,0.033023&ctz=420&t=m&z=16&iwloc=A
>
>
>
> *From:* Steve Gregory [mailto:[log in to unmask]]
> *Sent:* Wednesday, October 07, 2015 2:15 PM
> *To:* TechNet E-Mail Forum; Ed Popielarski
> *Subject:* Re: [TN] ENIG VS. ammonia
>
>
>
> Hi Ed,
>
> I use peelable latex mask quite often here (mostly for conformal coat
> masking) and have never had it tarnish ENIG. I do know that some masks
> contain some ammonia (some formulations more than others) and the ones that
> do usually have a note not to use on OSP finishes, but I've not seen such a
> note for ENIG. IHMO you got something else going on there besides the
> peelable mask causing the problem...
>
> Steve
>
>
>
> On Wed, Oct 7, 2015 at 2:46 PM, Ed Popielarski <[log in to unmask]>
> wrote:
>
> Hi all,
>
> I Have a batch of boards showing what I believe to be black pad. This is
> surfacing at thru hole (solderability, some pads are turning orange). One
> person suggested the peelable solder mask contains ammonia and this is what
> is causing it. I disagree.
>
> Suggestions or comments?
>
> Ed Popielarski
> Engineering Manager
>
> [cid:[log in to unmask]]
> 970 NE 21st Ct.
> Oak Harbor, Wa. 98277
>
> Ph: 360-675-1322
> Fx: 206-624-0695
> Cl: 949-581-6601
>
>
>
> "It's one kind of victory to slay a beast, move a mountain, and
> cross a chasm, but it's another kind altogether to realize that the beast,
> the mountain, and the chasm were of your own design."
>
> https://maps.google.com/maps/myplaces?hl=en&ll=48.315753,-122.643578&spn=0.011188,0.033023&ctz=420&t=m&z=16&iwloc=A
>
>
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