Electronics Forum | Mon Mar 16 09:07:14 EST 1998 | Justin Medernach
| We have just go another batch of PCB's from our loaders, and some of the boards are severely warped. | The boards are PCI cards and one of the boards is 9mm out at one end. The PCB is 210mm long and 4 layers. | I am wondering if anyone knows what
Electronics Forum | Thu Mar 05 16:25:27 EST 1998 | Brian Stumm @ ETS
| I am looking for information on reflow temps for a flex board. There is only one 6 pin IC but the board has a 3M double sided tape. | Is it possible to reflow without damaging the tape. Any suggestions? Do you have a profiler for your reflow oven?
Electronics Forum | Tue Jan 13 08:08:37 EST 1998 | Vanessa Munoz
I have recently been put in charge of our SMT line. We have to developed a SPC. My questions are: q1. What are the �most� important parameters to monitoring and which of the control charts do you usually use depending of the parameter..? Our line is
Electronics Forum | Thu Aug 30 14:14:27 EDT 2001 | dougt
James Take a board with double sided tape and run it with all the other parts "shorted". Make sure that the part is being placed by the head/spindle that will be used during a full run. Inspect the part after it is placed and carefully remove it a
Electronics Forum | Wed Sep 26 17:50:59 EDT 2001 | mparker
My Opinion/Editorial- Being a frequent (nearly daily) visitor to SMTnet I find postings by some sales types as being a shameless shilling to drum up business. We even experienced (most recently)an audacious posting that was thinly disguised as being
Electronics Forum | Wed Sep 26 16:32:40 EDT 2001 | davef
Placing a component the correct side up: * May affect heat dissipation. [Umm, that sounds like stretch, but who knows what designers think about?] * Allows reading the markings on those components that have markings, however cryptic the notation of
Electronics Forum | Tue Oct 09 11:50:44 EDT 2001 | Marc Peo
Hello Darby! Mike is correct in saying that reversing the conveyor can be done but the position of the cooling zone would be troublesome. I am guessing that you are looking at a left to right machine that you would like to run right to left or vice
Electronics Forum | Mon Oct 08 23:17:48 EDT 2001 | Brad Arnold
We are trying to produce a PC Card bus assembly with a 672 pin BGA on one side. These pcb's are .015 thick. I believe the ball pitch is .5mm. The pcb's are plated with white tin. The pcb's are in a 1 X 3 array. We had 2 plates with appropriate cutout
Electronics Forum | Fri Oct 26 11:37:27 EDT 2001 | Dave G
You could start by putting together a matrix of P/N's vs product. This will tell you which parts are common with most of your jobs. These would then become part of a fixed feeder setup that would stay on the machine. (These will probably be mostly R'
Electronics Forum | Mon Oct 29 15:58:47 EST 2001 | davef
Kitting: Buy-in material in kit form that is complete and in the proper form. Line set-up: Layout all boards to be the same width. Printer set-up: Use a dispenser, instead of a printer. Dispenser set-up: Program & debug off-line. Placement machin
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