Electronics Forum | Wed Oct 06 04:11:35 EDT 2010 | grahamcooper22
I've done minimal research to this point and > understand my issue with solder on the double > sided boards is due to oxidation that occures on > the unpopulated pads when the board makes its > first trip through the reflow oven. > > We did run
Electronics Forum | Wed Jan 24 11:27:54 EST 2007 | bradlanger
We have been using SN100C lead free hasl for over a year now with good success. It is very solderable and has good shelf life. You do have to make sure the finish gets applied to the correct thickness. If the lead free hasl finish is not applied thic
Electronics Forum | Wed Jan 13 04:27:00 EST 2016 | crystalpcb
Hi Here is our factory production capability: Shenze Electronic PCB Specification Layer Count 1 to 35 Layers Material Brand Shengyi,KB,GRACE,ISOLA,Rogers,Taconic,ARLLON,Bergquist Base Material FR-4（TG135,TG150,TG170,TG180），Halogen Free FR-4，Ceramic
Electronics Forum | Tue May 15 15:15:53 EDT 2001 | ohboy
Hi all, I just discovered this forum and I'm very impressed. We have a vendor who recently stopped placing desiccants in the vacuum packaging for our pcbs. (Yes, it's on the dwg!) His reasoning was that the desiccants can degrade the finish on the
Electronics Forum | Tue May 22 08:43:05 EDT 2001 | ohboy
Wow! I'm going to apply for something at Desiccare, I think... I found similar things about desiccants, but mostly material related stuff, also some concerns more about the indicator card than the desiccant. Nothing conclusive. At the moment, I
Electronics Forum | Wed May 16 08:48:12 EDT 2001 | ohboy
I been a bunch o' places...! Some good, some bad, re-inventing the wheel in many cases. Our specs are pretty specific in a lot of cases, but that doesn't mean they always get followed. It usually becomes a case of "It's not quite right, but we rea
Electronics Forum | Tue May 15 21:57:06 EDT 2001 | davef
Welcome!!! Where the hay ya been??? Sorry bud, were lining-up with your fab [it hurts me to say that, but when yer ] We used to dry pack with desiccants, also. Its probably an old MIL-STD-2073-1C requirement [er something like that]. We qui
Electronics Forum | Mon May 21 17:32:23 EDT 2001 | davef
I said: "Our electronic circuit board fabricators seal the boards in moisture barrier bags [MBB]. We discontinued the use of desiccant bags in these MBB because of concerns about the desiccant releasing materials that would affect the solderability
Electronics Forum | Sun Aug 07 21:38:27 EDT 2005 | darby
Get a couple of quotes on ENIG. You may be surprised at the price. HASL, (which is often considered to be the cheapest finish), is now more expensive for us than ENIG due to the extra processes involved.
Electronics Forum | Thu Aug 04 15:53:07 EDT 2005 | GS
Hi Ted, look at this tread: Lead-free solder alloy: SN100C from AIM solder then see note of Bob Gilbert (from FCT Assembly) you can have from him very interesting documentation CD about HASL made by SN100C alloy Regards GS
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