Electronics Forum | Thu Nov 29 15:08:56 EST 2007 | jaimebc
Shy, You mentioned that you are using "dog bone" apertures for your chip components? It doesn't make sense to me. I thought that the "dog bone" was used for fine pitch devices, to keep the solder away from the center and avoid bridging. It doesn't
Electronics Forum | Mon Dec 03 10:22:11 EST 2007 | pms
The PCB's are supplied by the customer. No options. The BOSS say's get it done, make it work, I don't want to hear it. My BOSS is a psychotic idiot. The printer is a DEK with no options for manual fiducial over-ride. I think my idiot BOSS wrote the
Electronics Forum | Tue Dec 04 09:46:50 EST 2007 | pms
Thanks for all your suggestions. I like the BGA replacement pad option the best. Reprogramming/programing? Forget it. That's what I'm trying to avoid. I'd be there all friggin day long, with all the loser "Labor Only" accounts we have. And oh, the p
Electronics Forum | Wed Dec 12 12:08:30 EST 2007 | realchunks
Yes, you can ask for scrap boards, buy Dummy boards/parts or engineer off past runs. For this cost, I would profile, profile, profile. I would make/buy a dummy board. If you don't have one this thick, glue/ adhesive/ bolt some scrap boards togeth
Electronics Forum | Wed Dec 19 15:32:03 EST 2007 | slthomas
"Any risks associated with double pass stencil printing?" Mostly just too much paste, plus the associated bridging, and your stencil gets dirty quickly. Any gap between the stencil and the board gets filled with paste on the first pass, then migrate
Electronics Forum | Tue Nov 25 11:35:11 EST 2008 | wavemasterlarry
Listen, I conqure with with wAyne on this one as your board house is always gonna the first person y a blame if you haven't adjusted any process paarameters in a while and see board related issues that can be traced to the board house. I once though
Electronics Forum | Mon Feb 04 19:24:37 EST 2008 | swag
We have an Advantis and it's great for low volume, high mix (flexjet head). If you have good CAD data to upload, it takes little time to program as you can update vision on parts and placements while you are actually building boards ("NPI mode"). I
Electronics Forum | Sun Feb 10 20:27:50 EST 2008 | jmelson
As long as it doesn't have a thermal pad soldered under the package, it shouldn't be a big problem. Small, pointed iron, stereo zoom microscope if you can find one, or a head-mounted magnifier. Lots of light. Rest the heel of your hand on the boar
Electronics Forum | Thu Mar 13 16:37:48 EDT 2008 | darburch
The only time the customer is going to care about the standards is when it costs them money. Unsophisticated customers will continue the practice of providing little or no useful information, poorly designed boards and ridiculous mods until there is
Electronics Forum | Wed Jun 18 09:13:44 EDT 2008 | realchunks
You're barking up the wrong tree. Solder "splashes" are generally caused by your print being off pad a bit. They are called solder fines. I've never seen a placement machine have the capability to push paste around using it's kiss-off from the noz
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