Electronics Forum | Fri Dec 18 09:07:24 EST 2009 | tommyg_fla
dave, where I work they are having the same problems with 1B31 acrylic. The coating thickness is 6-8 mils dried so that have to do several passes with an air dry between them and a final oven cure. They think that it might be related to the heating r
Electronics Forum | Wed Dec 02 14:54:52 EST 2009 | jdumont
Hi all, just wondering what type of brushes you all are using to manually touch up/apply your conformal coatings? We use an solvent based acrylic and do minor touch ups as they are processed. Occasionally we will have a bristle or two come off the
Electronics Forum | Thu Dec 17 18:08:41 EST 2009 | lynn_norman
Back in a former life, we had 3 products that were PCBs bonded to aluminum boards. We used a PSA from 3M to bond the board to the aluminum. Polymers are almost invisible in x-ray, but ultrasound worked quite well. You should try CSAM. Don't know
Electronics Forum | Mon Dec 21 10:20:47 EST 2009 | zanolli
We are looking to purchase a table top batch oven, with nitrogen, for prototype work on various PCB assy's - some with BGA's. The intent is to simulate a multi-zone production oven profile - and we kow that an exact simulation is not possible - just
Electronics Forum | Wed Jan 06 01:43:27 EST 2010 | oddbudman
Hello, we have recently had some products returned (they were installed and operating in the field for around 2 months before they were returned). After looking at the boards it seems the vias have failed. We now have 2 pc pcbs with the same Via fa
Electronics Forum | Fri Feb 26 17:16:24 EST 2010 | jlawson
If you have trouble also you can check out Valors vPlan, i have it running Yamaha YV100Xxg machines - they support Assembleon versions too. Can generate VIOS files from ALtium Input - either CAD DB files or ODB++ as Altium Designer supports this now.
Electronics Forum | Thu Apr 15 20:01:24 EDT 2010 | sarason
I normally use a particularly aggressive Hand Cleaner for cleaning oil off your hands at garages/ workshops and then Benzotriazole. The Hand cleaner comes from an industrial chemical supplier. It usually contains some NaOH while most Hand-cleaners do
Electronics Forum | Mon Feb 01 14:24:45 EST 2010 | boardhouse
Hi Jamyboy, I would find out from DDI what the 70% was rejected for, Could have been a repeat issue due to a scratch in artwork or something like that. I would not just jump and tell them to rebuild all until you know the facts. DDI is a very re
Electronics Forum | Tue Feb 02 08:50:20 EST 2010 | stepheniii
Is it possible the 70% are marginal and the board shop is being uber picky? I've seen a huge range of quality standards for board shops. And considering the cost of the boards I think a boardshop tour would be warrented to get firsthand knowledge o
Electronics Forum | Tue Feb 02 09:05:41 EST 2010 | rway
First, why are they rejecting the boards? Are they rejecting them based on your acceptable limits or is it due to the standards they are using. Companies typically have standards that the board house must adhere to before shipping the product (depe
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