Electronics Forum | Tue Aug 31 19:17:43 EDT 2004 | russ
Now see Dave, now I have some good info on why it is "bad", This must be the lead enrichment I have heard about but never got any substantiated data or explanantion. I wonder how much weaker or less reliable these are. Is there any data that you k
Electronics Forum | Fri Jul 06 13:44:15 EDT 2007 | shrek
Krikies! seems like a head-scratcher if I may say so me-self. I would say the other ogre is right, that surface finish will play a big factor in your solder joint's grain structure or how shiney 'tis. Non-HASL bearing finishes will typicaly exhibit
Electronics Forum | Wed May 24 16:19:58 EDT 2006 | inds
John, there have been quite a few discussion on Mixed Assemblies in this forum.. do a search.. you will get whole lot of information.. in addition - IF you are using Lead-free reflow profile...make sure the rated temp for Sn-Pb components is not vi
Electronics Forum | Wed Apr 26 01:18:33 EDT 2006 | ge_lim
Hi We are in the process of developing a lead free product to be used in a non lead free selective soldering machine, i do have concern in these, and hope you guy can share your experienced expert opinion: 1. What does it take to convert to lead fre
Electronics Forum | Wed Apr 26 07:37:34 EDT 2006 | amol_kane
"Can we reuse the same machine? My point here is that the non lead free process has already coated the machine interior ( exhaust, internal flow ) with leaded component, and by conversion to lead free are we containminating the lead free product from
Electronics Forum | Wed Apr 26 07:37:52 EDT 2006 | amol_kane
"Can we reuse the same machine? My point here is that the non lead free process has already coated the machine interior ( exhaust, internal flow ) with leaded component, and by conversion to lead free are we containminating the lead free product from
Electronics Forum | Tue Jul 29 10:46:17 EDT 2008 | realchunks
Oh, well if you can profile, model your profile to the profile supplied by the paste manufacturer. Anything outside of their recommended profile is all experimantal.
Electronics Forum | Fri Jul 25 15:54:22 EDT 2008 | pcbbuilders
I am trying to optimize my reflow profile. i have a 5 zone oven. lead-free: for the 1st 3 zones, i am good, at about 150-200 deg for 150 seconds. during the 4th zone, i am at a temp of 200-220 for 50 seconds. during the 5th zone, i am at 220-245 f
Electronics Forum | Fri Jan 27 17:23:10 EST 2006 | muse95
Watch the solder profiles allowed for these caps. Most electrolytics cannot withstand high heat. Even RoHS compliant Electrolytics are often rated for peak 245C, 3 secs max, for example. Nowhere close to the 260C 10-20 sec you usually like to see.
Electronics Forum | Wed Apr 26 09:48:32 EDT 2006 | patrickbruneel
Checkout this link http://www.rohsusa.com/ any comments on this??
