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November 2005

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Subject:
From:
Anil Kher <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Mon, 21 Nov 2005 12:01:31 +0530
Content-Type:
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Dear lee

I  understand the new version of flash gold is direct immersion on copper.

Is that correct. Has it been tested extensively?

Anil Kher
micro interconnexion pvt. ltd
D3-12A, Corlim Industrial Estate
Corlim, Ilhas , Goa , India 403110
tel: 91-832-2284209/337. fax 2284209/2285271
e mail: [log in to unmask]
Leaders in Gold plated PCBs - selective/ cob
an ISO 9001-2000 Company


-----Original Message-----
From: Lee parker [mailto:[log in to unmask]]
Sent: Monday, November 21, 2005 1:16 AM
Subject: Re: best plated surface finish

Jerry

Hope all is well with you.

I did not mention immersion silver since it has been discussed at length in
this forum and most are ware that I am a huge advocate of immersion silver
going bask to 1995 when I installed the first such line in North America at
the AT&T plant in Richmond.

I mentioned Flash Gold because it is a relatively new coating (in its
present format) and is just beginning to catch the attention of the OEMs.

Best regards

Lee

J. Lee Parker, Ph.D.
JLP Consultants LLC
804 779 3389
----- Original Message -----
  From: Gerald Gagnon<mailto:[log in to unmask]>
  To: [log in to unmask]<mailto:[log in to unmask]>
  Sent: Friday, November 18, 2005 6:28 PM
  Subject: Re: [TN] best plated surface finish


  Lee

  Kudos from a long time lurker......

  You're absolutely correct. Many many years of OEM experience with this
  finish. Lots of fear over purported high cost of gold. There's a few
  "application" secrets but it is the ultimate surface finish.

  Now that the cat is out of the bag, how come you didn't mention immersion
  silver?


  Gerry Gagnon


  From: Lee parker <[log in to unmask]<mailto:[log in to unmask]>>
  Reply-To: TechNet E-Mail Forum <[log in to unmask]<mailto:[log in to unmask]>>,
Lee parker
  <[log in to unmask]<mailto:[log in to unmask]>>
  To: [log in to unmask]<mailto:[log in to unmask]>
  Subject: Re: [TN] best plated surface finish
  Date: Wed, 16 Nov 2005 08:25:34 -0500

  John

  Another option is flash gold over nickel. Both are plated inline using an
  electrolytic process(as opposed to ENIG). The gold thickness is roughly
two
  micro inches. The OEMs that I am familiar with that have used this finish
  have reported very good results.

  Most of the PCB suppliers providing this process are in China.

  Best regards

  Lee

  J. Lee Parker, Ph.D.
  JLP Consultants LLC
  804 779 3389
  ----- Original Message -----
     From: Babcock
John<mailto:[log in to unmask]<mailto:[log in to unmask]>>
     To:
[log in to unmask]<mailto:[log in to unmask]<mailto:[log in to unmask]<mailto:TechNet
@IPC.ORG>>
     Sent: Tuesday, November 15, 2005 7:28 PM
     Subject: [TN] best plated surface finish


     If somebody wants an extra smooth plating finish using lead free
plating
     what material would they use...and what would be the finishing process?
     I've heard HASL is sort of rough...and it really doesn't apply using
     silver solder because of the melting temps.
     Is ENIG (electroless nickel immersion gold) the way to go to get a
     smooth finish?

     thanks!

     John Babcock
     PCB Designer III
     Isothermal Systems Research (ISR)
     2218 N. Molter Rd
     Liberty Lake, WA 99019

[log in to unmask]<mailto:[log in to unmask]<mailto:jbabcock@sprayco
ol.com<mailto:[log in to unmask]>>
     P: (509) 241-4641
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