Electronics Forum | Sun Oct 27 07:56:58 EST 2002 | wongmanchung
Does any expert here know the specification of board deflection when we mounting component by pick and place machine? That is when the nozzle place the chip on the pcb, the board will have some deflection. And are there any requirment that we need t
Electronics Forum | Wed Nov 06 12:52:28 EST 2002 | charlie
Check out one of the board suppport that are currently available: Grid-Lok, Formflex and others. These systems are available for many models of printers and P&P. They automatically set up to any board, first or second side, and provide excellent su
Electronics Forum | Tue Oct 29 14:24:24 EST 2002 | genny
SOP small outline package SOIC small outline integrated circuit TSOP thin SOP TSSOP thin shrink SOP PQFP plastic quad flat pack (also CQFP is ceramic QFP) LQFP low profile QFP VQFP I don't know QSOP a guess is 'quad small outline pkg'
Electronics Forum | Wed Oct 30 09:28:50 EST 2002 | gregp
How about your designator actually contains size info in a code. For example, SO14-237-050-090. That is "package type" - "width" (over leads) - "lead pitch" - "thickness". The problem with this is a great deal of thought has to be put in before comm
Electronics Forum | Wed Oct 30 10:40:46 EST 2002 | fastek
Just make sure you factor in a registration fee before you buy the equipment and you will be fine. The prices range from $2,000 to $5,000 for registration from most of the manufacturers. Once you register the machine and as long as it is still suppor
Electronics Forum | Wed Oct 30 17:18:01 EST 2002 | Frank
What does it mean to 'register' a machine? Pay the fee and get service? Sounds like extortion... Does this happen in other industries as well? You can easily pay $60K-$100K (the price some new low end machines) for some exotic cars and you don't
Electronics Forum | Thu Oct 31 03:16:30 EST 2002 | swalter
I have read a number of discussion relating to cars purchases and it maintenance . As far as I know , in cars, you drain your money on that piece of luxury , however, for production equipment , you are investing to grow your money , we are all argui
Electronics Forum | Wed Oct 30 15:50:39 EST 2002 | dphilbrick
Dan Generally it is a good practice. If we are doing PTH type assembly or "low end" assembly I would probably not worry, but many board finishes today such as white tin, gold and OSP mandate special handling. Oils from dirty hands can cause solderin
Electronics Forum | Wed Oct 30 23:14:41 EST 2002 | caldon
Doug is right contaminates can be transfered from hands to boards easily. I also know gloves are a good practice as some times people wear moisturizers and hand creams that can also cause issues. Another thought is that you do not want people handl
Electronics Forum | Thu Oct 31 15:32:33 EST 2002 | slthomas
Whoa, I have (for a long time) been under the impression that lead can only be absorbed via the mucus membranes, not through skin as in the hands. Did I miss something?? Not that I behave would much differently, other than donning gloves whenever I
