Electronics Forum | Thu Jan 27 14:49:53 EST 2000 | Glenn Robertson
Tuan - One of the reasons I suggested pre-tinning (aside from the negative effects of Gold on appearance and reliability) is the known slower wetting of Sn/Ag and Sn/Cu alloys as compared to Sn/Pb. If you don't have to be Lead-free, the high Lead
Electronics Forum | Wed Jan 26 14:33:47 EST 2000 | Glenn Robertson
Tuan - How about Sn/0.7Cu? It's M.P. is 227 and it's readily available. If the leads are Gold plated you might consider pre-tinning them. If you need a higher temp alloy any of the major solder companies can help - I suggets you start with Ind
Electronics Forum | Tue May 12 22:57:30 EDT 2009 | davef
Polyimide bare board with tin over nickel solderability protection.
Electronics Forum | Thu Dec 17 10:04:28 EST 1998 | Chrys
Necessity is the mother of invention... The other day I loaned my last bit of high-temp solder to a co-op and never saw it again. Then I had to run a profile and I was in a pickle with no solder. So I ran out to the local Radio Shack to see if the
Electronics Forum | Thu Dec 17 10:22:31 EST 1998 | Earl Moon
| Necessity is the mother of invention... | | The other day I loaned my last bit of high-temp solder to a co-op and never saw it again. Then I had to run a profile and I was in a pickle with no solder. | | So I ran out to the local Radio Shack to
Electronics Forum | Fri Jun 07 09:39:06 EDT 2019 | cristian_amlima
I totally agree with you when whe talk about a lead-free process. In my early comment I thought we were talking about a tin-lead process with the pcb pb-free, when the solder paste limits should be respected. That is the motive the temperatures I sa
Electronics Forum | Tue Jul 12 06:13:30 EDT 2005 | dougs
A while back we checked out all our manufacturing equipment for lead free capability, we thought our soldering irons would all be fine as they can reach temperatures well in excess of lead free alloy melting points. Last week i was speaking to someo
Electronics Forum | Tue Sep 26 14:06:33 EDT 2006 | patrickbruneel
Jun 26, 2006 (See Comments Below) Editorial Managing the Naughty Child Mike Martel, Editor, Circuitnet I've been listening to voices on both sides of the RoHS issue and the more I hear, the more foreboding the tone becomes. Despite what some wr
Electronics Forum | Thu Sep 04 21:50:47 EDT 2003 | davef
We like to use "enameled wire" that can be stripped by hot solder. Formvar [105�C] will not do that. Formvar was designed to with stand the hot oil seen in transformers. So, it requires either chemical or mechanical stripping. Most polyurethanes
Electronics Forum | Wed Sep 03 16:59:13 EDT 2008 | glennster
At a former employer we required HASL thicknes to be a minimum of 0.75 micron (30 microinches), as measured at the thinnest point on any given pad. This would generally assure a minimum 1 year solderability shelf life. Usually when we saw a soldera
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