Electronics Forum | Mon Mar 30 04:33:48 EDT 2009 | 89jeong
Hi all We also met the solder nonwetting problem as below. This happend after reflow and this is Rohs cpmpliant. How do i solve this problem? Thanks
Electronics Forum | Wed Nov 09 07:43:12 EST 2022 | micropak
ENIG boards have low shelf life as oxidation starts showing up quickly on the solderable areas. We usually keep them vacuum packed till they are ready to be assembled. Most PCB manufacturers will send them vacuum packed.
Electronics Forum | Thu Nov 10 21:33:17 EST 2022 | stephendo
So if you stored them in a nitrogen cabinet then you would reduce the O2 diffusion as well as keep moisture out of the boards.
Electronics Forum | Fri Aug 14 07:27:42 EDT 1998 | Earl Moon
| | Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | | Xingsheng | Xingsheng: Welcome. | Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill | Web resources: http://www.pw
Electronics Forum | Fri Aug 14 08:59:51 EDT 1998 | Dave F
| | | Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | | | Xingsheng | | Xingsheng: Welcome. | | Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill | | Web resources: htt
Electronics Forum | Tue Jul 08 20:14:50 EDT 2003 | davef
YiEngr, MA/NY DDave: Please excuse the coarse language ... horse patoey!!! Companies been building reliable products with no-lead components and Sn/Pb solder for years. For example, TI has been shipping parts with leads whose solderability is prote
Electronics Forum | Thu Nov 10 12:29:57 EST 2022 | stephendo
The G in ENIG is gold. It does not oxidise. Either you are thinking of OSP or your board shop is providing defective boards if your boards show oxidation. It would be the nickel that is oxidising but should be totally covered by the gold. Is there
Electronics Forum | Fri Nov 11 22:14:11 EST 2022 | kumarb
I would certainly test the boards but from our experience, the vacuum sealed in room temp, no issues at all with our PCBs sourced from Suntak / PCB Founder / Fastprint / Yaxinda / JLCPCB well past the 12 month mark. We building boards purchased 5-10
Electronics Forum | Thu Nov 17 20:19:00 EST 2022 | emeto
I need to back it up with a something like IPC standard. It seems to me that people have used boards that aged after the 12months period, however there is no information supported by studies that can show results in quality and reliability of the boa
Electronics Forum | Tue Jul 08 18:53:21 EDT 2003 | MA/NY DDave
Hi The answer in general is no mixing of Lead Free with Sn/Pb solder. If you look at reliability data, failures after stress tests and then SEMs, failures occur at grain boundaries inside the joint. Lots more happens. By the way this mixing happe
