Electronics Forum | Tue Nov 12 00:49:37 EST 2019 | myke03o
I am optimizing a stencil opening for BGA with 0.4mm pitch and pad diameter of 0.2mm. Can anyone advice of stencil thickness and stencil opening I can use in order to have a good paste release. Thanks for all your answers.
Electronics Forum | Thu Nov 14 10:52:56 EST 2019 | jandon
Maybe something like this could work?
Electronics Forum | Thu Nov 14 18:25:07 EST 2019 | myke03o
Hi Jandon, Thanks, I will try it on my DOE.
Electronics Forum | Thu Nov 14 21:47:41 EST 2019 | sssamw
Yes, 0.25x0.25 square could work @0.1 thickness, use nano-coating or electroform stencil for better solder paste release.
Electronics Forum | Thu Nov 14 22:24:43 EST 2019 | dman97
Use a type 5 solder for maximum paste release.
Electronics Forum | Wed Aug 21 20:11:34 EDT 2002 | mitch
We are going to begin using a 64 pin 10mm QFP with 0.5mm lead pitch. I was recently asked if we need to purchase our PCB with E3 coating instead of tinned pads when using the .5 pitch. The concept being suggested is that the E3 coating will give us b
Electronics Forum | Wed Jul 30 23:40:45 EDT 2014 | matusov
Yes, but I have seen designs where the whole row > of leads has no mask(which is also a NSMD) Apparently I might have to do just that for some parts. We have a few parts with 0.2 mm pads at 0.35 mm pitch. Our PCB shop says that they need at least
Electronics Forum | Wed Mar 29 03:40:06 EST 2006 | Frank
The Juki 2060 can have both front and rear trolleys and you do not loose any feeder locations. My question was why can't the Assembleon put trolley on the rear? I recently visited a friend at a company that used a lot of Assembleon and compared run
Electronics Forum | Wed Jul 16 18:46:46 EDT 2008 | mariss
emti, Thank you for the reply but I'm looking for a reasonable quality pcb mfg. We do SMT and thru-hole in house (3 Juki KE-750L machines) of our product. My problem is with the bare boards: holes poorly registered with top copper, solder masks mis
Electronics Forum | Wed Jul 30 00:47:10 EDT 2014 | matusov
Hello gurus, I am a hardware designer with a small company. We are about to send a new PCB for fabrication. This board uses dozens of tiny QFN, DFN, and similar packages. As a final check I have been going through the datasheets of all these parts t
