Rockwell use a halide bearing flux?? Perish the thought. We exorcised those demons years back. Hillman tries to sneak one in every once in a while and we have to beat him severely. Doug Pauls Principal Materials and Process Engineer Rockwell Collins On Wed, Jun 3, 2015 at 2:16 PM, <[log in to unmask]> wrote: > 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 > >> > > >> > > >> > ______________________________________________________________________ > >> > This email has been scanned by the Symantec Email Security.cloud > >> service. > >> > For more information please contact helpdesk at x2960 or > >> [log in to unmask] > >> > ______________________________________________________________________ > >> > > >> > >> > > > > > > ______________________________________________________________________ > > This email has been scanned by the Symantec Email Security.cloud service. > > For more information please contact helpdesk at x2960 or > [log in to unmask] > > ______________________________________________________________________ > > > > ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________