Electronics Forum | Tue May 20 12:41:27 EDT 2008 | slthomas
We had some materials management brainiac insist that every component of a product had to have an exact quantity stated on the BOM so we had to weigh every board with and without paste printed. We rented a 4 place digital scale, weighed 5 of each boa
Electronics Forum | Wed Jun 11 13:11:33 EDT 2008 | namruht
We are currently completely building lead based assemblies. We are going to start doing our homework based on Management request. I have a pretty strange question that I was asked but really did not have an answer to. Can a Lead-Free assembly have a
Electronics Forum | Thu Aug 13 10:58:58 EDT 2009 | davef
First piece of advice: build the board as you would any other board. Probably, you will be surprised at the holding force of the solder of the connections of the BGA, because the surface area of the solder is very large compared to the weight of the
Electronics Forum | Fri Jul 23 02:54:47 EDT 2010 | wizzkid
I think that it can be solved by placing ths into a baking oven with the set point above the PCB Tg. For this process to be succesful, weights need to loaded onto the PCB stack during the heating cycles. Once the cycle is complete, the PCB stack will
Electronics Forum | Mon Mar 11 06:49:42 EDT 2019 | SMTA-Bob
You problem will be related to the part type or the design. Standard 40 or 100 pin QFN or LGA parts are not going to drop due to weight as they are just a few grams. If you send a photo of the PCB pad footprint and the component separately I may be a
Electronics Forum | Sun Jun 23 02:16:47 EDT 2019 | emanuel
Some manufacturers put very strong glue, the wider the part is so increases the glue strength. May sound funny but the only thing that worked was attaching a fishing weight to the tape, need to play a little until you find the correct size. The only
Electronics Forum | Sun Feb 09 18:20:24 EST 2020 | richardcargill
Does this only happen with certain feeders or certain components? We have a few regularly used components that experience the same problem ( Philips SMT machinery ) where the cover tape is just too sticky. Experience taught us which components will c
Electronics Forum | Tue Mar 07 13:07:12 EST 2000 | JAX
Mark, You should be able to get whoever builds your wavesolder pallets to create some you can also use in SMT. The only difference is you might have to change pallet materials to reduce the weight. That's just my opinion, I could be wrong
Electronics Forum | Mon May 15 19:59:45 EDT 2000 | Dave F
Doug: If the metal content of your NC paste is about 50% (by weight) there is no difference netween stencils for NC and other flux type pastes. And those are in the SMTnet archives. Good luck and happy searching Dave F
Electronics Forum | Tue Mar 07 13:07:12 EST 2000 | JAX
Mark, You should be able to get whoever builds your wavesolder pallets to create some you can also use in SMT. The only difference is you might have to change pallet materials to reduce the weight. That's just my opinion, I could be wrong
