Electronics Forum | Wed Jul 16 18:21:20 EDT 2008 | emti
BGA Placement is not easy as we think, Mainly you have to make sure you don't have acceessive amount of paste, try to paste your board as it covers full ball, make sure it is not short before you place any part. If you placing the BGA by hand be car
Electronics Forum | Thu Sep 11 09:59:47 EDT 2008 | rarnold
Paste stored tip down, so separation in the tube is not suspect. Remember that the defect was produced on a screen printer running with a Rheopump. A few more details are that the strip of the board containing the uncoalesced solder is consistent w
Electronics Forum | Fri Oct 17 14:26:39 EDT 2008 | hegemon
We use Mirtec MV-7s for post SMT inspection of solder joints as well. The artistry is in the program debug. We are very pleased with the solder inspections provided by these machines, and technology having advanced bit, most every AOI machine has t
Electronics Forum | Fri Oct 17 14:55:50 EDT 2008 | rway
We use a YesTech M1 system. I have been pleased with it's performance and feel it has done fairly well being that it only has one vertical camera. There are different algorithms you can use to compensate for the lack of angled cameras to catch some
Electronics Forum | Thu Oct 30 22:29:58 EDT 2008 | davef
For most applications, a nice square [or rectangle] pad works just fine. Assemblers ship boat loads of boards with these every day. It's reasonable for tight decoupling capacitor requirement applications to use round or radiused pads for components
Electronics Forum | Tue Nov 04 07:50:14 EST 2008 | davef
Sure. Here's what you should do to apply repeatable amounts of flux on BGA during rework: * Squirt some gel flux on a plate or something like that that has a flat bottom and raised sides to corral the flux. * Cut notches into one edge of an old credi
Electronics Forum | Fri Nov 14 08:06:43 EST 2008 | jdengler
Have you figued out how to import the gerber data into Camtastic? Once that is done click the tool menu at the top then the assembly utilities then create and group parts. This will allow you to select the pads for a given package and name it the
Electronics Forum | Fri Nov 21 16:48:05 EST 2008 | kennyg
Anyone have an 'easy' solution for reducing PCBA handling damage. I'm fighting low level chipped, scuffed and broken-off SMT parts. The damage is spread out across different areas of the assemblies. The assemblies are double sided SMT with 0402's
Electronics Forum | Sat Nov 22 09:58:29 EST 2008 | realchunks
The only easy solution is not to handle the boards. Purchase true double sided reflow lines. Buy automated magazine loading conveyors. Check machine board supposrts. Are you sure it's from handling? We found it was 50/50 between board handling
Electronics Forum | Mon Dec 22 20:16:17 EST 2008 | davef
The first question in solving the "ol' SMT component loss after second-side wave operation" problem is: So, what makes you think the components actually came-off in the wave and not during some previous 'handling'? Putting that aside, we'll play thi
