Electronics Forum | Tue Dec 09 10:58:12 EST 2014 | rgduval
I've always assembled those style connectors by hand. They require paste on both sides, correct? With that variable, I've never considered trying to do them with paste/reflow. Cheers, ..rob
Electronics Forum | Wed Dec 03 10:44:03 EST 2014 | kkay
We have a smt connector on side one of our pcb that overhangs through the board to the second side. We can't figure out how to print the second side with this part sticking out. Unfortunately we cannot run the second side first due to an LGA that has
Electronics Forum | Wed Dec 03 11:55:42 EST 2014 | spoiltforchoice
I think there are several answers: 1)Design Fail - slap whoever created it 2)Fit that connector as a manual process after the PCB is finished. 3)Print side 2 using a jet printer 4) Shield the fragile LGA and reflow it twice anyway. 5)Use a thicker PC
Electronics Forum | Mon Mar 26 19:48:22 EST 2001 | pzohbon
In regards to cleaning RMA solder paste from stencils; Right now we are cleaning the stencils by hand. I want to get away from this by going to an automatic cleaner. Any recommendations for ultrasonic stencil cleaning systems using 440-R SMT deterg
Electronics Forum | Tue May 04 10:59:23 EDT 2004 | Evtimov
Hi, It depends of your boards(are they for SMD or not) and how many boards you assemble. The process at all is like that: 1.Stencil printer - to adjust the paste 2. Pick and place machine(for your quantity) 3.Reflow oven Theese are the machines you
Electronics Forum | Sun Mar 07 13:10:15 EST 1999 | Sam Sangani
| Has anyone used the mechanical stencil foil tensioning system from certain company that eliminates using stencil frames and epoxy & mesh? Any comments on whether it's worth looking into? We go through product revisions like we go through clean so
Electronics Forum | Fri May 14 12:44:26 EDT 2010 | padawanlinuxero
Hi Since we are a small company with a small smt line, we did not have problems with our stencils because they are small and could clean them with Alcohol and wipes, but now we are growing, and now I am having a 20X20 stencils frames to deal with,
Electronics Forum | Fri Oct 25 14:46:50 EDT 2002 | russ
Leading edge, This is used to determine the orientation of the board as you want to run it. If you use center justified stencils this is usually not an issue since you can just turn the stencil any which way you want to. If you are using front/rear
Electronics Forum | Tue Feb 02 22:57:32 EST 2021 | pnguyvu
Hello Charliem, Contact Steve Yen ( Steve@usastencils.com )at USA STENICLS INC. He'll give you better idea overprint or step . He has solid experience in design smt stencil. We've been receiving very good stencil from Steve.
Electronics Forum | Thu Jun 23 10:06:10 EDT 2011 | davef
Leave it to the Eurolanders to come-up with a goofy, confusing name for something simple. Stepped stencils are chemical etched or laser cut. IPC-7525 provides guidelines on designing stepped stencils. Look here http://www.ipc.org/TOC/IPC-7525.pdf
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