Electronics Forum | Tue Apr 17 19:58:49 EDT 2007 | davef
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Electronics Forum | Thu Aug 19 09:58:14 EDT 1999 | John Thorup
| | | we've received an inquiry if lead free solder for solder dips or surface mounting (cream solder) is available on a technical scale | Dr. Weber I'm not sure what you mean by "on a technical scale" but various no lead alloys are available in
Electronics Forum | Thu Nov 03 13:35:46 EST 2005 | Amol
the copper forms intermetallics with tin to get Cu3Sn and Cu6Sn5. thus intermetallics formation consumes Cu and depends upon the cooling rate, faster the cooling rate, lesser the intermetallic formation
Electronics Forum | Wed Nov 02 01:30:12 EST 2005 | fctassembly
Hello Arnold, Yes, by definition of joint formation, copper will dissolve in lead free solder in order to form the connecting intermetallic layer. There is a distinct difference in the copper dissolution rates of the major alloys being considered wi
Electronics Forum | Thu Nov 03 08:18:17 EST 2005 | fctassembly
Hello Arnold, Just to clarify the Sn100C discussion: Please note that SN100C is the Nihon Superior alloy composed of tin/.7copper/nickel. The key point in regard to SN100C is that Cu does not go directly into solution but first reacts to form an inte
Electronics Forum | Tue Jul 21 14:35:31 EDT 2020 | charliedci
Yes, we have an old Universal axial and they still offer independent machines for axial, radial and DIP components, but I do not have the floor space for that. Some offer "odd form" insertion machines (Juki, Hanwha, Cenncorp)which is the direction I
Electronics Forum | Mon Jan 11 01:44:29 EST 1999 | Erhard Hofmann
Does anyone know 2-pin DIP components? Who uses them, why are they in the DIP form and not simple axial components? Are they usually placed by hand or by modified DIP placement machines? Thanks for any answers, Erhard
Electronics Forum | Fri Nov 21 11:00:27 EST 2014 | gregp
Hi J_Dub (Joe), Thanks for the input. Sounds like some fairly densely populated through hole assemblies. 100 solder joints per board is up to 50 parts per board (I know you may have DIP's so it could be less than 50). 24 boards in a panel x 50 par
Electronics Forum | Thu Nov 20 16:51:48 EST 2014 | joe98375
gregp: Our PTH process has not changed in many years. Our products are fairly simple as far as electronics goes and everything gets potted anyways. ~90% of everything we build is single sided TH with ~ 100 solder joints per board. Each board is ~
Electronics Forum | Fri Feb 11 16:34:01 EST 2000 | Chris McDonald
Does anybody have a source for jigs/tanks for a manual dip operation? We are stuck conformally coating PCBs manualy and the volumes do not justify us buying a 100k automated machine. there for we have to manually dip the pcb in a silicon based coatin
