Bev, Knowing me what do you think? The nobility of the mind as well as the metal can not always be easily washed away (disillusionment/dissolution). Dewey -----Original Message----- From: Bev Christian [mailto:[log in to unmask]] Sent: Wednesday, August 15, 2012 5:54 PM To: 'TechNet E-Mail Forum'; Whittaker, Dewey (EHCOE) Subject: RE: [TN] gold removal question - to remove or not? :) Dewey, Was that intentional? Wrong use of the word "disillusionment". Graham, I agree with Dewey that it is certainly overkill for PTH parts. For SMT parts, have you done the math to figure out % Au in a completed SMT joint with different thicknesses of gold? Bev RIM -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey (EHCOE) Sent: Wednesday, August 15, 2012 3:44 PM To: [log in to unmask] Subject: Re: [TN] gold removal question - to remove or not? Graham, OK, we'll consider you a dip until proven otherwise. I hope you are talking about SMT components? There is a good case for not pre-tinning (sounds more technical than dip) PTH parts where there is a reasonable expectation of disillusionment of the gold in your flow solder process. Dewey -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Graham Collins Sent: Wednesday, August 15, 2012 12:16 PM To: [log in to unmask] Subject: [TN] gold removal question - to remove or not? Hello Technet I'm in the midst of a debate about gold removal. Our policy on component leads is to double dip tin all gold. J-STD-001 says I do not have to do it if there is less than "2.54 ìm [100 ìin]" of gold, but is it realistic to operate on that basis? For example, looking at an Airborne brand connector I find the spec sheet says that there will be 50 ìin gold, minimum. Which is not totally helpful as it does not tell me maximum. I'm assuming given the price of gold that they aren't looking to put a lot more than the minimum on, but how controllable is the process? Could we check the thickness once and assume we are safe? (and as you can tell from my phrasing I'm of the more conservative camp on this one, still dipping the parts until proven wrong) regards, Graham Collins Halifax Production Engineering (902) 873-2000 ext. 6215 This message and any attachments are solely for the use of the individual or entity to which it is addressed and may contain information that is privileged or confidential or controlled technical data that is subject to the laws of Canada or the United States. If you are not the intended recipient, any disclosure, use or distribution of the information contained herein is prohibited. If you have received this communication in error, please notify the sender by reply e-mail and immediately delete this message and any attachments. ______________________________________________________________________ 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] ______________________________________________________________________