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Hi Inge=2C
looking at the SEM pictures I would also say it's a pot issue.
The Copper load is to high=2C surface gets grainy and dull.
BTW=2C we have changed from SN100CL to SN100Ni+ and the Ni+
looks more shiny as CL.
Simon
> Date: Wed=2C 24 Jun 2009 20:27:52 +0200
> From: [log in to unmask]
> Subject: Re: [TN] SN100C I don't like the look of board pads
> To: [log in to unmask]
>=20
> Thanks=2C John and Mike=2C
> pot issue=2C sounds reasonable to me. I can't find a better guess=2C so I=
'll=20
> give them a hot pot shot.
> Thanks again=2C never been disappointed with TN=2C just couple of hours f=
rom=20
> question to answer.
> /Inge
>=20
>=20
> ----- Original Message -----=20
> From: "John Burke"=20
> To:=20
> Sent: Wednesday=2C June 24=2C 2009 4:59 PM
> Subject: Re: [TN] SN100C I don't like the look of board pads
>=20
>=20
>> Ugh=2C
>>
>> Last time I saw something like that was on a wave solder machine where t=
he
>> solder pump impeller was breaking up which lead to a very "rough" lookin=
g
>> joint with traces of iron.
>>
>> John Burke
>> (408) 515 4992
>>
>> -----Original Message-----
>> From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
>> Sent: Wednesday=2C June 24=2C 2009 6:41 AM
>> To: [log in to unmask]
>> Subject: Re: [TN] SN100C I don't like the look of board pads
>>
>> Morning Inge and Everybody!
>>
>> Got your pics posted Inge=2C and as usual=2C your pictures always give m=
e a
>> new window in which to see things. Here they are:
>>
>> http://stevezeva.homestead.com/files/SN100CSEM1.jpg
>>
>> http://stevezeva.homestead.com/files/SN100CSEM2.jpg
>>
>> I renamed your files and saved them as *.jpg files because my web page
>> doesn't allow me to use *.tif files. We've only used SN100 here a few
>> times=2C and you're right=2C ours looked just like regular 63/37 HASL. W=
e've
>> never had a SEM done on the boards we used=2C so I have nothing to compa=
re
>> your images to. But the boards we used were nice and shiny.
>>
>> Steve
>>
>> -----Original Message-----
>> From: TechNet [mailto:[log in to unmask]] On Behalf Of Hernefjord Ingemar
>> Sent: Wednesday=2C June 24=2C 2009 7:55 AM
>> To: [log in to unmask]
>> Subject: [TN] SN100C I don't like the look of board pads
>>
>> Hi all=2C
>>
>> will send pictures to Steve.
>> The two SEM images show SN100C boards that we got recently.
>> I don't like the look of the solder surface. Very grainy and with lots
>> of copper (darker spots). EDAX gives even fragments of iron. My first
>> thought was that the manufacturer had contaminated baths=2C which will b=
e
>> denied=2C of course. Anyway=2C my opinion is=2C that SN100C should be mo=
re
>> like ordinary tin/lead=2C i.e nearly zero copper and a more shiny
>> approach.
>>
>> /Inge
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