Electronics Forum | Wed Dec 22 07:20:21 EST 2010 | piter
HI I used both of solder leveling HASL and ENIG, HASL I can recommended for biger pitch is cheaper solder leveling than ENIG but problem with that solder leveling is during the reflow process HASL isn't flat and during reflow process component move
Electronics Forum | Thu Jul 20 13:08:35 EDT 2000 | Bob Willis
The solder paste formulation is different 63/37 is a tin lead alloy so t here is one difference from a lead free. Yes you can get no clean lead free products but if you compare the amount of visible residues they will be normally higher. So far most
Electronics Forum | Mon Jun 14 11:00:50 EDT 2004 | raylawre
This is one reason why we changed package styles. Maybe consider getting a different size tube, say from 500g to 1000g or something like that. We use jars for lead paste, and tubes for lead free (different application method) If lead free comes off t
Electronics Forum | Sat Jun 12 19:08:11 EDT 2004 | Ken
Well, it finally happened. A machine Operator did not follow our bar code process and "grabbed a tube of solder paste" and guess what. Built 250 assemblies with LF paste when it should have been Tin/Lead!!!! SOLDER PASTE SUPPLIERS: can you make t
Electronics Forum | Fri Jun 11 13:20:32 EDT 2004 | raylawre
We have segregation of materials, Different storage areas for paste and Bar stock, etc. We are bar coding the solder paste materials (have to scan paste container, and blades before use, etc. line won't run unless its good). Also changed packaging s
Electronics Forum | Wed Oct 19 11:33:15 EDT 2011 | caerleon
easier if you recycled on-site? You can still send off for reclaimation the oxide powder that your left at the end of the process. Failing that talk to your supplier to see if they have arrangements to do this for you or look at reducing dross - i f
Electronics Forum | Mon Jun 14 22:36:52 EDT 2004 | Ken
I hear ya Ray, but I have standard (automatic) solder dispenser that are 700gram modules. Jars have other issues that I have migrated away from... I like your idea of slaving the paste bar code label to the board scanner....
Electronics Forum | Wed Oct 19 20:04:06 EDT 2011 | warwolf
yeah I’ve tried to go down the road of internal recycling but the company carnt justify spending 20k on a machine that does it. Ah but where still onto it in other places though our SMT department has very minimal wastage on solder paste as we have b
Electronics Forum | Mon Oct 16 15:46:24 EDT 2006 | slthomas
The wording in your second post re: lead vs. lead free behavior seems to contradict your first post, but I'll assume you mean that the lead free boards fail sooner during vib. testing. My question is, if this is the case, are the parts that are fai
Electronics Forum | Tue Jun 01 16:10:44 EDT 2004 | raylawre
Would like to know what people are doing to differentiate their lead and lead free environments in their production areas. How do you keep it separated? What, if any, visual colors do you use to indicate a lead free area? Gray? Green? For instance, w
