Electronics Forum | Fri Jan 04 15:42:03 EST 2002 | nwyatt
There are several implications: - some lead free alloys do not form an acceptable solder joint when used with lead contaning paste. (ie. Bismuth) - if you use both lead free and lead containing components, you will have different solder joint compos
Electronics Forum | Wed Nov 20 11:23:00 EST 2002 | Gris
Does any body know how many US or europe based component manufacturers have decided not to use Sn/Bi on lead plating. Most of far east manufacturers seem to have selected Sn/Bi on their component finish. Intresting articles on Samsung,Epson and OKI w
Electronics Forum | Wed Mar 21 07:44:19 EDT 2012 | cuervo
Hello ! I have a vitronics 500s ( five zones), and the solder paste is ALPHA OM-338-PT lead free. have anyone a profile to start and test, i need some reference temperatures.and conveyor speed thanks !!!
Electronics Forum | Wed Nov 20 09:27:28 EST 2002 | davef
There's a fair number of issues with lead and bismuth solder alloys: * Lead and bismuth alloys can form a eutectic composition of Bi52Pb32Sn16 in the grain boundaries. Melting point of the eutectic alloy is 95�C [~96�C?]. * Fillet lifting of PTH du
Electronics Forum | Sat Feb 24 09:07:03 EST 2024 | emanuel
Not very long, minutes
Electronics Forum | Thu Apr 05 07:41:57 EDT 2012 | aj
try 180 180 195 248 260 belt speed 20 ( lightly populated boards) adjust speed to 18 for heavily populated.
Electronics Forum | Thu Nov 16 23:34:56 EST 2006 | mds33200
Hi, I am new in this industry and have purchased a beguinner unut, a 3-in-1 solder, desolder, hot air station. Currently I work on cellphone mainboards. At the moment I only replace single large chips on the mainboard. I would like to be able to repl
Electronics Forum | Thu Dec 10 09:06:47 EST 2009 | stepheniii
Just how cold do you store your paste? And what are your solder paste reps like? Here they fall over each other giving support for their paste. And have you seen the problem with flux separation or have you only heard about it?
Electronics Forum | Tue Dec 08 08:52:42 EST 2009 | cunningham
How do people prepare there solder paste for screen print? We currently remove them from the fridge and mix them in a 500g solder paste tub mixer to mix the flux and paste together we waste to much paste at the moment as we only use the tub for 1
Electronics Forum | Mon Dec 14 18:45:08 EST 2009 | gregoryyork
why not use a paste where it requires no refrigeration at all cheers Greg