Electronics Forum | Thu Mar 24 07:06:06 EST 2005 | davef
There's a lot of comparison tables on the web. Here's one: Properties - Summary [A Winlow Circatex] Attribute||Hasl||Immersion Silver||Immersion Tin||Electroless Pd||OSP||Eless Ni / Imm Au Shelf Life (months)||12||12||12||12||12||6 Multiple Reflows
Electronics Forum | Sat Oct 18 09:30:43 EDT 2008 | hussman
Sounds like a part problem. You can SOMETIMES over come this with a hotter profile. We see this a lot with brokered parts. Seems like a lot of people are rejecting parts because a lot of companies haven't perfected their RoHS process, yet produce
Electronics Forum | Mon Aug 14 14:27:00 EDT 2017 | emeto
Here is some food for thought. Try to answer these questions yourself and I am sure you will see huge improvement. Reasons: - Bad PCB design - Plating-uneven HASL cause more than OSP Au/Ni or Silver - Poor paste and print quality - uneven paste ca
Electronics Forum | Fri Jul 30 16:02:49 EDT 1999 | Earl Moon
| | I received a request from customer to assemble ceramic substrate (alumina oxide)that printed with a low temperature Copper thick film conductor (the overglaze layer is polymer). The Copper pads are exposed without any coating. | | This ceramic su
Electronics Forum | Thu Feb 12 12:22:04 EST 2015 | barryg
Thanks for your input Rob, Our operator does not profile pcb's which so far we have not had issues that could be attributed to his oven settings. We may be running a pcb with a BGA on it and I was concerned about our lack of profiling. I have spent q
Electronics Forum | Tue Aug 27 22:01:37 EDT 2002 | davef
IPC [search the fine SMTnet Archives for links] sells 7530 and other documents like it. The frequency that you check your temperature profile depends on: * Confidence that your oven is holding the profile. * Purpose of running the profile, for insta
Electronics Forum | Thu Apr 16 10:11:51 EDT 2015 | hugh_manatee
Your solder paste manufacturer’s profile is just a “guideline.” You can customize your profile to meet your product’s need. For better grain-structure (shiney-ness) try a ramp soak spike profile keeping your preheat temps very low before your reflo
Electronics Forum | Thu Aug 21 21:08:41 EDT 2003 | Tom B
Correction on note 1: Some can't stand a second peak profile
Electronics Forum | Tue Oct 23 08:07:44 EDT 2012 | kkay
I have attached a PDF overview of some test we have done and the results. (fixed oven profile)
Electronics Forum | Wed Jun 12 10:59:27 EDT 2019 | slthomas
IOW, profiling good, here's some stuff for sale.
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