Electronics Forum | Mon Feb 25 21:14:25 EST 2002 | davef
This sounds like information bantied-about by the fine folk at CSL [Contamination Studies Laboratories in Kokomo, IN]. If so, this includes the sum of the halides from the following sources: * Fabricated board * Components * Processing of the assemb
Electronics Forum | Tue Apr 09 18:29:34 EDT 2002 | davef
Any-Layer Interstitial Via Hole (ALIVH). In printed circuit board fabrication, a registered mark of Matsushita Electric for a filled microvia structure in all layers for applications requiring small-size, lightweight build-up PWB to achieve high-den
Electronics Forum | Mon May 13 14:15:46 EDT 2002 | davef
Entek is Enthone's OSP [organic solderability protection]. It is widely used in the PCB fabrication business. Imidazole (Via Systems) is good, but is not as widely available. Search the fine SMTnet Archive on: * OSP * Entek CU-56, Entek Plus CU-10
Electronics Forum | Fri May 17 16:53:50 EDT 2002 | davef
I recall a couple of papers in the SMTA 'Knowledgebase' that used ball shearing and an element in a study that compared BGA [maybe uBGA] component fabrication methods, er sumpin.
Electronics Forum | Tue Jun 04 22:46:21 EDT 2002 | davef
Factors to consider are: * Squeegee speed * Squeegee pressure * Separation speed * Stencil thickness * Stencil aperture fabrication method * Stencil aperture shape * Paste type * Stencil under-wipe frequency Search the fine SMTnet Archives for a thr
Electronics Forum | Thu Jun 20 08:23:19 EDT 2002 | davef
Either you need a stronger flux or the solderable surfaces need to be reconditioned. Most board fabricators don't do reconditioning. Search the fine SMTnet Archives for discussion on ROSA. EMPF is one place that does ROSA on a contract basis.
Electronics Forum | Sun Dec 01 08:26:19 EST 2002 | Rama
What is the different between ODB++ compared to gerber files. Can PCB manufacturer use ODB++ to fabricate PCB. Why it is always hv to use gerber file, when ODB++ is more accurate file ? Pls help. Thank you.
Electronics Forum | Tue Dec 03 15:26:07 EST 2002 | GSW
This might be a trival mundane suggestion but try to use non conductive plate to hold components. Probably even made of the pallet material. I am sure your pallet fabricator will have tons of scrap and he can help you find one. T
Electronics Forum | Mon Dec 16 17:38:56 EST 2002 | davef
Baking boards in a nonvalue added activity. Quit doing it!!! As a routine production activity, it is either: * Totally unnecessary ... OR * Band-aid to cover for problems in fabrication, purchasing, or storage methods. Search the fine SMTnet Archi
Electronics Forum | Wed Jan 15 17:28:20 EST 2003 | russ
Yep, Across the board! It seems as though the resources available at our suppliers anyway have been diminished from the economy. But our orders and lead times are now getting shorter and shorter with more complex PCBs being demanded. another day,
