Electronics Forum | Tue Jul 01 12:22:09 EDT 2008 | gpe.
Hi, I have a question fou you guys: Is there any difference between LCC's and QFN's? or, Are those just two terms to call the same part? Thanks for your help. Gpe.
Electronics Forum | Wed Oct 04 16:21:52 EDT 2006 | russ
Cannot see you cleaning under this type of part with aqueous no matter what you try Russ
Electronics Forum | Tue Jul 01 13:35:49 EDT 2008 | realchunks
QFNs have pads on the bottom. LCCs have pads on the sides that are exposed on the bottom.
Electronics Forum | Tue Jul 01 13:40:32 EDT 2008 | gencinas
Thanks Real Chunks. Gpe.
Electronics Forum | Thu May 09 22:32:50 EDT 2002 | ianchan
Hi Guys, thanks to everyone for their help and advise! we are running these LCC parts in the 1000's, so its going to pose a big problem to either: 1) tin-plate the oxide layer, 2) HCL away the oxide layer, thanks for the option shown, dun think so
Electronics Forum | Wed Aug 20 10:27:25 EDT 2003 | Dan Gosselin
Do any of you guys have a list of parts that cannot survive hanging upside down during reflow soldering. As our board designs become increasingly dense and higher speed, we need to use all available pcb real estate. This means locating parts we hi
Electronics Forum | Tue Mar 19 00:14:47 EST 2002 | ianchan
Hi Guys, Can anyone help us out here, please? We need to know what formulae (other than Length(L)xBreath(B)xheight(Z)), is used to determine what volume of paste is required for 20mils pitch leadless chip carrier (LCC28), for the paste printing pro
Electronics Forum | Wed May 08 23:48:01 EDT 2002 | ianchan
Hi mates, someone told us to use mild HCL acid 5% to 10% solution and submerge the LCC parts into this solution. hopefully this will clean off the varient copper oxide layer on the LCC leadless terminal wall. after the HCL soak, submerge the parts
Electronics Forum | Thu Sep 05 18:15:15 EDT 2002 | pjc
There are chemistries out there that will solublize some post-solder NC flux residues. I have had success with Zestron material Vigon A200 and Petroferm material Hydrex DX. Go to http://www.zestron.com and http://www.petroferm.com These are chemical
Electronics Forum | Tue Oct 17 21:59:47 EDT 2006 | jovial_guy23
Hi Steve, I agree with you that cleaning under LCC's is often difficult but its not impossible. In order to clean the residues, the most important thing to consider is the right compatibility of the fluxes with the cleaning chemistry. There are seve
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