Electronics Forum | Tue Jun 22 11:14:03 EDT 2004 | Steve Thomas
A very quick survey regarding PCB finishes for a lead-free process. What is the most popular PCB finish for lead-free soldering ? Who drives the selection of the finish, assembler or designer ? Are tin whiskers an issue for anyone ? I'm coming at th
Electronics Forum | Fri Feb 02 12:37:16 EST 2007 | Derek W
We've had the same issues with silver. We also ran into shelf life issues but that's specific to our business. We've moved to ENIG with good success, our board vendors were also very happy to move away from silver though I'm not sure why. As long as
Electronics Forum | Mon Dec 19 08:56:18 EST 2005 | davef
Q1a. If the thickness of the silver is too much (how is too much??), A1a. We have heard stories of using Ag2 to limit silver [or gold] dissolution, but have never seen formal studies to demonstrate that idea. First, exclude the use of silver plate
Electronics Forum | Mon Jun 28 22:44:13 EDT 2004 | davef
Q1: What is the most popular PCB finish for lead-free soldering ? A1: We'd guess ENIG Q2: Who drives the selection of the finish, assembler or designer ? A2: A tight circle of recrimination, blame letting, and other human ills that is primarily driv
Electronics Forum | Tue Mar 15 09:46:06 EST 2005 | davef
Comments are: * J-STD-001 and A-610 committees have eliminated the requirement that solder joints be "bright and shiny". Certain metallizations (such as gold) can influence the solder joint surface texture, but have no impact of reliability. Reliance
Electronics Forum | Mon Jul 05 03:44:53 EDT 2004 | johnwnz
Dave, I'm going to disagree with you on the ENIG, it's my 3rd choice only just beating out OSP for that 4th spot. 1. Immersion Silver - cheaper than ENIG, as flat and no issues with Brittle interface (black pad) or Gold Embrittlement) Longer shelf l
Electronics Forum | Tue Apr 17 10:16:42 EDT 2001 | davef
Welcome to SMTnet. Awww, those assemblers are always whining about something. Just tell him to shut-up and build the blankin� boards. Jeesh!!! We used to have copious archives on the topic on SMTnet and our friend Brian is working his fingers t
Electronics Forum | Wed Oct 30 13:35:45 EDT 2019 | emeto
We prefer Flat finish. We don't like HASL.
Electronics Forum | Tue Nov 05 20:24:53 EST 2019 | sssamw
How to choose PCB finish? It depends your product application.
Electronics Forum | Mon Nov 04 07:31:54 EST 2019 | amitthepcbguy
As a manufacturer, I prefer plated nickel gold, electroless nickel immersion gold, immersion silver and palladium. These surface finishes are the best options to replace leaded surface finishes. These surface finishes can withstand higher temperature
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