Electronics Forum | Wed Mar 16 09:06:07 EST 2005 | russ
This is what I might do, I would purchase either a solder volume (preferred) or at the least a paste height measurement piece of equipmment, The most important parameters with pronting are volume and registration. You need one of these inspection
Electronics Forum | Tue Nov 08 12:05:57 EST 2016 | aemery
Lachrymal, Where are you getting that from. Let me keep this simple because there can be so many variables in modern printing, some you can control and some you can't. Unless you are designing your own PCB's where you can decide how to orient the co
Electronics Forum | Mon Mar 07 11:20:10 EST 2005 | mrduckmann2000
Russ, I tried to get a screen for glue but the design engineer who laid this board out made up his own rules. The 0402 pads are to close for a proper dot size.....per the stencil house. That is why I am going the solder mask route. I would rather
Electronics Forum | Wed Aug 25 19:31:22 EDT 1999 | Dave F
| JUST WANDERING IF ANYONE IS PRINTING ADHESIVE ON THE BOTTOM SIDE OF BOARD WITH THROUGH HOLE COMPONENTS ALREADY PLACED. I'VE BEEN TOLD IT IS POSSIBLE BUT WANT TO LOOK INTO THIS PROCESS IN DEPTH. | Chad: You don't need to YELL!!! Anyhow, yes we ha
Electronics Forum | Fri Mar 04 11:00:37 EST 2005 | mrduckmann2000
Anybody have any ideas on the proper way to screen solder mask onto a PCB? I am going to cover SMT parts that were soldered to the btm side of the PCB, now I have to mask them in order to run this animal through the wave solder process. I know it w
Electronics Forum | Sun Mar 06 20:08:38 EST 2005 | mrduckmann2000
Davef, You have a good question. If we had perfect design engineers out there that would use the proper component spacing and not put SMT parts between and around thru-hole parts - glue and wave would work perfectly. I have done this with great su
Electronics Forum | Thu Sep 07 11:39:39 EDT 2017 | swag
Two magic bullets help us greatly with fine pitch printing: 1) nano coatings (we use a DEK product) YES it really does work 2) temperature control in the printer (AC unit). Of course good quality stencil and proper cleaning of the stencil are im
Electronics Forum | Mon Feb 18 11:31:02 EST 2008 | davef
Print paste through the new stencil with a piece of mylar [or other clear plastic sheet about the thickness of paper] between the board and the stencil. Dispose of the mylar according to local practice after confirming proper aperturation of the sten
Electronics Forum | Fri Feb 28 03:59:41 EST 2020 | SMTA-Davandran
My input are: i. To solve tape not pulling back if it is due to high per is better to use more feeders to minimize this issue. ii. To slow down printing speed. Hence, has proper line balancing which minimize board idling before pick and place process
Electronics Forum | Wed Apr 26 19:10:43 EDT 2023 | cyber_wolf
This machines support table looks similar to AP and UP machines. I believe MPM published the dimensions of the "H" tower that the dedicated plates bolts to. As far as the plate, they are typically (2) pieces with the inside hollowed out to allow for
