Steve,
Doesn't look like much of a coat of solder. HASL strips off a lot but
that just looks plated to me.
Chuck
Charles W. Brummer | 3M Manufacturing Engineer
3M Electronic Solutions Division
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From: Steve Gregory <[log in to unmask]>
To: <[log in to unmask]>
Date: 10/01/2013 03:47 PM
Subject: Re: [TN] HASL question
Sent by: TechNet <[log in to unmask]>
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 palce.
--
Best regards,
Vladimir Igoshev. PhD
mailto:[log in to unmask]
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