Electronics Forum | Mon Nov 05 16:54:00 EST 2007 | bbarton
There are several things that can be done to increase throughput on you screen printer, including the panelization of your bords as Steve & Hussman has pointed out. However that's of limited use if you have plenty of stock that is not panelized. That
Electronics Forum | Wed Feb 13 19:32:02 EST 2008 | daxman
Greetings everyone. We are currently doing some experimentation with solder paste printing over ground planes. In this application, the entire perimeter of the PCB is a ground plane. It's about 4mm wide and wraps around the whole PCB; There is no so
Electronics Forum | Fri Nov 25 15:52:40 EST 2011 | davef
"IPC-2221 - Generic Standard On Printed Board Design" talks to fiducials. Anther take on fiducials says they shall meet the following requirements. * Make fiducials 1 - 1.5 mm diameter circle. * Cover fiducials with tin. * Keep solder mask opening at
Electronics Forum | Wed Aug 22 07:24:34 EDT 2012 | ericrr
how about this for resistor & capactors with 4mm pitch, all measurements in millimeters. cell A1 "Input inside diameter" answer in cell B1 cell A2 "Input outside diameter"answer in cell B2 cell A3 "Input layer width,(from inner to outside layer) (no
Electronics Forum | Thu Jul 18 12:44:24 EDT 2013 | ericrr
after checking two computers, did not find it. However after using "google" found it in a flash. (less than 0.22 seconds) using a spreadsheet. how about this for resistor & capacitors with 4mm pitch, all measurements in millimeters. cell A1 "input
Electronics Forum | Tue Jan 20 09:41:25 EST 2015 | rgduval
Well put, Evtimov! :) I've made my argument against it. I'm not comfortable taking a job placing parts outside the capabilities of the machine in general, much less parts that I can't actually see! The machine is good down to .5mm pitch parts, and
Electronics Forum | Wed Apr 06 08:54:35 EDT 2016 | spoiltforchoice
Essemtec like to keep some details to themselves to make you initiate contact but the Jet nozzle page states it can do 0.4mm dots. Last I checked a single Jet dispenser was about £15k GBP, the Scorpion machine itself is effectively the same platform
Electronics Forum | Mon May 22 17:54:46 EDT 2017 | zsoden
Thanks for the replies. The single missed lead is a bit odd - we usually have an entire area missed and that's due to the board not sitting properly in the pallet fingers. I figured in this case it was likely due to poor fluxing? We have always str
Electronics Forum | Thu Jun 21 09:02:40 EDT 2018 | spoiltforchoice
I'd be tempted to say you buy whatever is most consistent with what you paid for the rest of the machine.... And if you can source Chinese copies& they aren't expensive it can't hurt to try a few. More generally (I don't know how these particluar ma
Electronics Forum | Mon May 20 12:01:37 EDT 2019 | gregoireg
I have a PCBA job which has on the top side a few standard QFN components (0.4mm pitch) and a big module (35mmx60mm) with 1.13mm BGA pads: https://imgur.com/a/YUGgejW To be clear, this module is composed of a PCB with some components on top and some
