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 | Fri Apr 04 18:08:26 EDT 2008 | comatose
We are a small OEM that runs a high mix/low volume environment. Typical runs are a couple or five hundred boards, one or two products per day. Currently, we are using a Quad DeHart SLC-20 semi-automatic stencil printer. (alignment is manual, printing
Electronics Forum | Wed May 16 01:06:38 EDT 2012 | bwjm
Hi Before I say anything I ll qualify who I am. I > work for a AOI/SPI manuafacturer > > Automatic > printer is your best option for small > runs. Print process is responsible for a vast > number of solder defects and improving here is > your b
Electronics Forum | Sun May 27 19:51:00 EDT 2012 | darby
Seeing as you say you only have a small amount of cash ... I'd also consider a semi-auto printer where you align a golden board, set up the two cameras by boxing or overlaying a pad etc, and then use the vernier adjustment to get each pcb to align wi
Electronics Forum | Sun Feb 15 17:32:08 EST 2004 | brian bennett
i have always found any of the alcohol based solvents good.here in the uk we use the alpha make.with screen auto wipes i found the set up to be most important.i.e how many pcb's printed before wiping.i found running pcbs with bga and .50 pitch compo
Electronics Forum | Mon Feb 23 12:22:32 EST 2004 | esoderberg
I have an MPM SPM and two Ekra E4 screen printers. I have always run them dry with vacuum. I am also using no-clean paste and have not had a problem. The volume I run per day on the machines is 4 - 6,000 bds
Electronics Forum | Fri May 11 15:33:36 EDT 2012 | markhoch
I personally believe that you money is best spent on improving your process. An automated printer will help make your process more repeatable, thus easier to control. An AOI will not improve your quality, it will only make your defects easier to dete
Electronics Forum | Wed May 16 09:23:04 EDT 2012 | jeremymek
In my experience Both Dek and speeline machines are good used. personally I think speedline seem to hold up better when PMs have been ignored though. Also make sure you can get a third party board support system into it like a gridlock or Vacunest
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 | Thu Feb 25 04:24:15 EST 1999 | Charles Stringer
| | 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
