Electronics Forum | Sat Feb 25 16:17:46 EST 2006 | A.N.other
Hi, been researching archives for PCB composition. Nothing much for what I want. Can anyone direct me/advise of PCB composition, and I mean the full works. Content of base materials, solder resist, chemical compositions of epoxy etc. Much appreciat
Electronics Forum | Mon Nov 19 05:49:44 EST 2001 | Cheng
The BGA solder ball composition is 62/36/2 Sn/Pb/Ag, does any problem exist for the solder joint reliability? And what is the difference on SMTA process between this and the normal 63/37 ball?
Electronics Forum | Mon Nov 19 10:06:15 EST 2001 | davef
Git otta taun!!! I never have heard of an Sn62 BGA solder ball. Several thoughts on Sn62: * Look at http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=4603&#Message17953& * Search the fine SMTnet Archives on � Sn62 �
Electronics Forum | Mon Aug 09 04:15:33 EDT 1999 | Jacqueline Coia
I am having cleaning problems when processing PCB's which have TAIYO solder mask on them. After processing, hand soldering and cleaning, a sticky residue is remains, resulting in a cosmetically poor finish with tide marks etc. Other soldermasks do no
Electronics Forum | Wed Jan 05 14:45:14 EST 2000 | Hoyt Moore
Does anybody know how to remove solder mask from pads that were masked over.
Electronics Forum | Fri May 21 09:48:30 EDT 2010 | tomg_fla
Am looking for a dispensable water soluble solder mask or peelable solder mask that can be dispensed and be run through a reflow oven with no swelling or degradation. Any leads on any materials or manufacturers to contact?
Electronics Forum | Wed Dec 18 08:38:17 EST 2002 | davef
Thanks Tim. Additional thoughts are: * We've talked here on SMTnet about hole fill previously. * That your ability to get hole fill is probably limited by mask in the hole makes us very uneasy, because hole could have varying levels of solder mask i
Electronics Forum | Wed Dec 11 11:35:15 EST 2019 | dilogic
Just out of curiosity - what is the rationale behind specifying mask thicknes?
Electronics Forum | Wed Dec 11 13:00:07 EST 2019 | slthomas
Excessive mask thickness also can wreak havoc on stencil printing.
Electronics Forum | Wed Oct 13 12:07:43 EDT 1999 | mikeh
Hi, I am currently using a peelable mask prior to wave soldering and have started exploring water soluble/washable masks. The mask will be used with water based and alcohol based flux. Are there any compatability issues to concider and how will this
