Electronics Forum | Thu Feb 17 08:14:57 EST 2005 | davef
The issue may not be the solderability protection. It could be that the metalization on the component terminal or the metal of the component terminal was not prepared properly before the solderability protection was added.
Electronics Forum | Fri Jun 10 19:42:46 EDT 2005 | ktron
Thank D.B. Cooper, actually this LED has 3 sides termination but no termination at underneath of LED. So this LED tends to float rather than performing solder joint during reflow process.
Electronics Forum | Thu Jun 16 22:07:16 EDT 2005 | davef
Chris As you imply, testing board and component solderability prior to assembly is preferred. * ANSI/J-STD-002 - Solderability Tests for Component Leads, Terminations, Lugs, Terminals, and Wires * ANSI/J-STD-003 - Solderability Tests for Printed Boa
Electronics Forum | Wed Oct 18 08:00:53 EDT 2006 | davef
Have you tested the solderability of the inbound components per ANSI/J-STD-002, Solderability Tests for Component Leads, Terminations, Lugs, Terminals, and Wires?
Electronics Forum | Thu Apr 19 02:49:07 EDT 2007 | ray
I observed some black dot or some oxidation occured on chip termination on pcba reflowed fews weeks ago as buffer stock. The solder joint and fillet wetting is good and shinning. It is an acceptable or defect condition per IPC standard/requirement? W
Electronics Forum | Tue May 29 09:58:32 EDT 2007 | davef
Is the component solderable per ANSI/J-STD-002, Solderability Tests for Component Leads, Terminations, Lugs, Terminals, and Wires?
Electronics Forum | Tue Jul 24 07:57:55 EDT 2007 | davef
It sounds like the QFN component is not solderable. * Use ANSI/J-STD-002, Solderability Tests for Component Leads, Terminations, Lugs, Terminals, and Wires * Contact your QFN component supplier for help * Consider a more active flux, since you might
Electronics Forum | Thu Feb 28 18:03:33 EST 2008 | jdumont
What kind of circuit board are you using that can carry the amount of current that would necessitate the use of a 4 awg wire? Cant you just terminate the cable with a ring terminal and screw or swage it into the board?
Electronics Forum | Wed Apr 02 08:26:18 EDT 2008 | davef
Even though we can't comment on that specific part, you're correct. If the solderability protection on the terminations is not symetrical, it could result in tombstoning. We used to see this alot in smaller components, where the plating did not compl
Electronics Forum | Fri Aug 08 09:49:17 EDT 2008 | scottp
We've seen the exact same problem. The solder joints had negative wetting angles and x-sections show that the PdAg termination dissolved into the solder. We no longer allow PdAg terminations.
