Did XFR confirm the presence of nickel on a HASL process?
Victor,

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: Tuesday, October 01, 2013 6:23 PM
To: [log in to unmask]
Subject: Re: [TN] HASL question

Hi Bob,

It's supposed to be, but I have my doubts...

Steve

-----Original Message-----
From: Bob Landman [mailto:[log in to unmask]]
Sent: Tuesday, October 1, 2013 5:22 PM
To: TechNet E-Mail Forum; Steve Gregory
Subject: Re: [TN] HASL question

Steve,

It looks like nice shiny nickel...

Is this a lead-free HASL?

Bob

Sent from my iPhone

On Oct 1, 2013, at 7:14 PM, Steve Gregory <[log in to unmask]> wrote:

> Okay here's another picture. I printed a solder sample and sent it
> through the oven and this is what it looked like:
>
> http://stevezeva.homestead.com/SolderSample.jpg
>
> You can see all the non-wetting going on. The board  was profiled and
> it was fine. We are using a FCT Assembly WS889 SN100C solder paste.
>
> What is even more strange is that the first side of the board looked
> okay, but the second side looks like in the photos, like the problem
> is confined to one side of the board if that's possible.
>
> The solder sample was only reflowed once, but I printed the paste on
> the side that was to be built last. Weird huh?
>
> I know you can't tell anything for sure just from some photos, but
> it's the strangest thing I've seen in a while...
>
> Steve
>
> -----Original Message-----
> From: Steve Gregory
> Sent: Tuesday, October 1, 2013 4:46 PM
> To: [log in to unmask]; Steve Gregory
> Subject: RE: [TN] HASL question
>
> Here's one picture:
>
> http://stevezeva.homestead.com/NonWetting.jpg
>
> Look at the left pad and the tarnish that you see there, does that
> look like tarnished nickel?
>
> This is after the board was washed. I have places all over the board
> that looks like this.
>
> I'll post a picture of what it looks like after I printed a solder
> sample with paste and sent it through the reflow over
>
> Steve
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
> Sent: Tuesday, October 1, 2013 4:16 PM
> To: [log in to unmask]
> Subject: Re: [TN] HASL question
>
> Ahhhh....it's what I figured. I think that's what happened. I'll have
> pictures later.
>
> Steve
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Wayne Thayer
> Sent: Tuesday, October 1, 2013 4:15 PM
> To: [log in to unmask]
> Subject: Re: [TN] HASL question
>
> No.  Not unless somebody screwed up.
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
> Sent: Tuesday, October 01, 2013 6:11 PM
> To: [log in to unmask]
> Subject: Re: [TN] HASL question
>
> Hi all,
>
> It's funny that the HASL topic has come up today, because we just ran
> a board today that supposedly was lead-free HASL finished, and man it
> looks like crap!
>
> Question; does a PCB get nickel before it gets Lead-free HASL'ed?
>
> Steve
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Vladimir Igoshev.
> PhD
> Sent: Tuesday, October 1, 2013 2:23 PM
> To: [log in to unmask]
> Subject: Re: [TN] HASL question
>
> Hello Victor,
>
> It wouldn't solder in a first place.
>
> --
> Best regards,
>
> Vladimir Igoshev. PhD
> mailto:[log in to unmask]
>
> SENTEC Testing Laboratory Inc.
> 11 Canadian Road, Unit 7.
> Scarborough, ON M1R 5G1
> Tel: (416) 899-1882
> Fax: (905) 882-8812
> www.sentec.ca
>
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