Electronics Forum | Wed Feb 05 11:38:46 EST 2003 | Stephen
Don't forget placement. I"ve seen chips broken when they are being placed because they were thicker than the parts data used for them. This is not an issue on Panasonic machines because they measure the thickness of parts but I have seen it happen
Electronics Forum | Sat Feb 15 06:40:14 EST 2003 | Hans Koerner, Germany
It is a serius problem with that mulilayer ceramic caps! In automotive applications you have to use 2 in series for one single cap. During depanelizing you create a mechanically wave in the board, so 3.. 4 mm. Best way is not to do such a wrong desig
Electronics Forum | Wed Feb 05 11:31:40 EST 2003 | lloyd
The grease to use is DAPHNE EPONEX M No. 1 as you would expect it is made by an oriental company (IDEMITSU KOSAN). Sanyo recommend that this procedure should only be carried out by trained personnel, so it may be worth giving them a ring before you s
Electronics Forum | Wed Feb 05 10:31:38 EST 2003 | bpan
Hello Everyone, Is anyone out there building smt boards that have plated through vias directly located through the pads. We are seeing some of these designs and the soldering is very poor because the solder is flowing through the via. We think that w
Electronics Forum | Wed Feb 05 21:05:38 EST 2003 | davef
Iman On your situation: As an earlier poster stated, your options are limited to opening you stencil aperture to compensate for the paste lost to the via. On your designer's belief that "it helps in heat dissipation": Could be true, but: * Hole wil
Electronics Forum | Thu Feb 06 13:57:01 EST 2003 | D. Brian Davis
I need some feedback on aqueous cleaners. We currently use a Unit Design batch cleaner. We will be looking to upgrade our board washing process and batch sizes in the near future. I am looking for user info. on the advantages/disadvantages to using b
Electronics Forum | Fri Feb 07 09:27:07 EST 2003 | davef
For all of the ranting about "sales-types" using the forum inappropriately, it's nice that some of those types get IT. So if you rant when people behaving poorly, then you must praise people when perform well. This is over-due. Hats off to Mike,
Electronics Forum | Mon Feb 10 21:42:03 EST 2003 | MA/NY DDave
Hey Nice Write Up, Running after his message Apex out in CA is coming in ??March (I'm to lazy to go and get the brochure) (Yet you can do a web hit on it Nepcon East in Boston is coming in June And there are other shows where you can see all t
Electronics Forum | Tue Feb 11 11:31:52 EST 2003 | Chad
My small R&D company (15 people) is considering the purchase of a bench top reflow oven & associated gear. The reasoning is that it would be nice to have reflow capability for 5 to 50 piece prototype runs in-house. As the only person with any real kn
Electronics Forum | Tue Feb 11 12:59:26 EST 2003 | matherat
The assembly process involves activity before you get to reflow. Reflowing is the easy part. Putting paste down and placing parts in wet paste is the terrifying part. Benchtop reflow ovens can be a real handy tool for small production but with the g
