Electronics Forum: ocm

LGA and Solderballs

Electronics Forum | Tue Nov 28 17:43:03 EST 2006 | IRAS

I'm looking to gain some knowledge on potential causes of solderballs on LGA's and advice on how to eliminate them. we all seeing some solderballs on only the edges of the LGA. Any inputs will be greatful.

tape and reel machine

Electronics Forum | Wed Oct 10 13:35:00 EDT 2001 | stepheno

I used to work with Chris. (neither of us are there anymore). What is he talking about is putting components into "pockets". The parts would come in, in sticks (tubes) but we wanted them in reels. At first we sent them out to be reeled, but that w

Tape and Reel Flatness?

Electronics Forum | Mon Nov 26 16:07:56 EST 2012 | jerlong

Greetings, Does anyone know where to find a tape and reel flatness specification? Looking at the EIA 481-B standard, there is no reference to the tape flatness (the images shown may "imply" flatness from one side of the tape to the other, However I

Flexi boards and uBGA

Electronics Forum | Fri Jul 07 03:27:31 EDT 2006 | dougs

Hi folks, thanks for all the tips. We have run our first batch of these flexi boards now. I had the PCB suppliers make me some 1.6mm FR4 carriers to lay the boards on to carry them through the process. (1 flat & 1 with cutouts for the second side)

Circuit cam and mydata

Electronics Forum | Wed Mar 25 18:34:34 EDT 2020 | spoiltforchoice

> What about designators? Using gerbers to program > a pnp machine was always a last resort to be done > only after much complaining and begging for > proper CAD data. Back in the day I used UniCAM to > program a mydata. After gett

Re: MoonMan and Tetras

Electronics Forum | Tue Apr 27 05:26:14 EDT 1999 | Charles Stringer

Hey MoonMan, Did I catch in one of your fabulous threads that you're using Tetra stencils? I'm anxious to find out how you're liking them. We we're all set up to go to Tetras, then mgt decided to close down our factory - Dooop!

Re: MoonMan and Tetras

Electronics Forum | Tue Apr 27 09:26:43 EDT 1999 | Chrys Shea

Hey MoonMan, Did I catch in one of your fabulous threads that you're using Tetra stencils? I'm anxious to find out how you're liking them. We we're all set up to go to Tetras, then mgt decided to close down our factor

V-scoring design and equipment questions

Electronics Forum | Mon Jun 12 17:32:17 EDT 2006 | flipit

Hi, A little off subject but I just finished a quick little experiment where I placed 0201 to 1206 and some ceramic resonators at specific distances off the scored edge. The distances from scored edge ranged from 0.025" on up at 0.025" increments.

Via holes and Wave Solder

Electronics Forum | Tue Mar 07 08:48:55 EST 2006 | samir

Our ICT Guy here at my company loves to use lots of via holes as test points - via holes which are 0.040" diameter, and spaced at 0.004" edge to edge spacing! He doesn't like to tent the via's either, so I always battle via-to-via shorts at the wave

Nitrogen gas and Tombstone defect

Electronics Forum | Tue Nov 29 14:57:45 EST 2011 | jlawson

Sorry on N2 and tombstone, many other aspects cause tombstones and n2 in itself does not cause tombstones. It can help make other bad variables tip over edge to cause tombstones more than with no N2. Get these right then N2 is not issue.

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