Electronics Forum | Mon Mar 27 09:54:35 EST 2006 | russ
Flash gold is usually to thick and will cause embrittlement of your solder joints if concentration exceeds I beleive 6% in the joint
Electronics Forum | Mon Nov 13 12:48:14 EST 2000 | Chris McDonald
Anybody have problen soldering a IC with leads that are copper base, plated with 300 u inch min. of 80Sn/20Pb solder? We are having problems soldering a 16 mil QVSOP to a Gold Flash Board. Thanks Chris
Electronics Forum | Mon Jul 20 17:04:44 EDT 1998 | Richard Jackson
Can someone point me to where I can get a copy of the spec for these finishes. Thanks Richard Jackson richardj@tanisys.com Jackson_Richard@csi.com
Electronics Forum | Thu Mar 30 08:59:46 EST 2006 | Dan
Yes the balls are at the outer edge. The chips we have are not showing exposed copper, but the lead-free finish...
Electronics Forum | Fri Mar 19 16:13:00 EDT 2010 | davef
The aluminum material is typically plated by a zincation process, followed by nickel plate and a gold flash layer. What do the soldered side of the component and the soldered side of the aluminum coin look like? Do they both take solder?
Electronics Forum | Thu Sep 05 23:32:29 EDT 2013 | winson16
This connector was designed with gold flash plating and the lead's surface was become dull and some black mark was observed on the contact surface.
Electronics Forum | Tue Mar 13 20:47:39 EDT 2018 | davef
I think of palladium coated copper with gold flash (CuPdAu) as bond wire used in chip attach. Look here: https://www.heraeus.com/media/media/het/doc_het/products_and_solutions_het_documents/bonding_wires_documents/fact_sheets/Factsheet_PdFlash.pdf
Electronics Forum | Fri Feb 01 05:18:59 EST 2013 | eniac
If you have a hard-gold on your pads, it's not a problem. Hard gold can give to you 4 or 5 times for PCB soldering (BGA repair). Soft gold (or flash-gold) can destruct, after that will start a migration of nickel up through gold, your pads will be
Electronics Forum | Thu Dec 08 22:26:45 EST 2005 | Mike_Kennedy
Dave, Excellent information thank you. What I cant seem to establish is how other manufacturers have found the FLASH gold in terms of reliability especially considering that the flash process is more difficult to control.
Electronics Forum | Tue Feb 01 21:51:05 EST 2000 | Dave F
Roni: Ron gives good advice on the thickness of your Electroless Nickel - Immersion Gold (ENIG) solderability preservative. Several additional comments are ENIG: � More expensive than OSPs and HASL. � Much flatter surface than HASL, similar to OSP
