pth type? Cl flux? used for the fe based pin? do you make it yourself
(board assembly)?  if not, some of the high profile parts may be
handsoldered on using Cl flux, and someone may not do a proper clean... it
happened before, etc. etc.  long time ago. just a guess. (steel pin are
not easy to solder using standard no clean).
                jk
> Nope.  I am talking about the actual surface mount and through-hole
> transformers that go on circuit boards, not the transformers that hang on
> poles outside your house.  Nor am I talking about futuristic cars that
> transform into Autobots or Decepticons.
>
> I want to know what the darn things are made of that could be supplying
> the
> high levels of ionic material I see in my IC extractions.
>
>
> Doug Pauls
> Principal Materials and Process Engineer
> Rockwell Collins
>
> On Wed, Jun 3, 2015 at 11:20 AM, <[log in to unmask]> wrote:
>
>> you mean degraded transformer oil or dielectric fluid?
>> http://en.wikipedia.org/wiki/Transformer_oil_testing
>>
>> >
>> Good morning all,
>> >
>> > I am doing some background research on residues you get from
>> transformers
>> > and toroid components in an IC extraction.  Unfortunately, I don't
>> know
>> > much about how such components are manufactured or the materials used.
>> Do
>> > any of  you know of a good tutorial or overview on such
>> > materials/processes
>> > that is available on the Net?
>> >
>> > Doug Pauls
>> > Principal Materials and Process Engineer
>> > Rockwell Collins
>> >
>> >
>> > ______________________________________________________________________
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>
>
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