I don't have any experience on this but based on the pictures I think I
would attempt to reflow by hand to see what is needed to make it work,
that might lead to a clue as what is not right.
pat
On Tue, Oct 1, 2013 at 4:23 PM, Steve Gregory wrote:
> 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 palce.
>> --
>> 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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