Electronics Forum | Fri Mar 26 17:12:17 EST 2004 | ben
I have recently encountered a new pcb design with a very high density of components on either side of the pcb. One of the suggested "fixes" is to use the smt pads as vias i.e. the via will be drilled thorough the centre of the smt pad. My concern i
Electronics Forum | Mon Apr 05 13:23:07 EDT 2004 | Ron W
Low-consumption Nitrogen configurations with an on-board O2 analyzer is the ideal way to go. I cannot speak for all oven manufacturers, but ours have N2 fed to the reflow zone only, which to me is really only where you need it. The gauges/flowmeters
Electronics Forum | Tue May 11 15:52:03 EDT 2004 | Erhan
It's been 10 years since I started to use this editing method but never knew that it was called wendy-house style. :-) This is most probably the answer you're looking for if you're only having problems around the 1206 types. For QFPs, I used to redu
Electronics Forum | Fri Sep 17 23:11:30 EDT 2004 | KEN
I have an application that uses 0201 devices coupled with ceramic column grid arrays. The coplanarity of the balls is specified not to exceed 7 mils! 4 mil foil for 0201's with a selective buildup to 7mil for the ceramic. Bloody designers! Take y
Electronics Forum | Fri Oct 08 04:57:30 EDT 2004 | newtoelectronics
I would like to design a small delay timer circuit to activate from a switch that when it is N/O it starts timing for two seconds and then activates a buzzer. I am trying to use a 555 timer with a buzzer attached running from a two lithium 3v batteri
Electronics Forum | Mon Jan 17 17:56:14 EST 2005 | russ
Haven't noticed any major difference between C's and R's. Our biggest problem is feeders that will advance to the same location and leave the part in the pocket. We see "billboarding" on R's when the feeder isn't working right. If you have a good
Electronics Forum | Thu Mar 10 15:10:07 EST 2005 | bandjwet
In reviewing the myriad of BGA reliability tech papers there seems to be little commonality in the type of test protocols. There are tests that are industry specific, device vendor specific and customer specific. What guidance in terms of minimum me
Electronics Forum | Mon May 09 18:43:58 EDT 2005 | keegomaster
Hi everyone! Me and my R&D team are working on the design of a highly flexible AOI. I'd like to know your "wishlist" on what you'd like a brand-new AOI to have. I gotta figure out the competitive advantage; what a better place than this "Agora". I'd
Electronics Forum | Wed May 25 17:17:45 EDT 2005 | Nicholas Anderson
Hello all!! I currently have this thought, of maybe producing my very own type of feeders. Say juki,panasonics,etc. but building,design,and production of my own. What would be preventing me from doing so? Let's say i wanted to build a Fuji CP-4 feed
Electronics Forum | Wed Jun 01 07:34:19 EDT 2005 | davef
It's unusual to use a horseshoe shaped pad for a 0805. Commonly when people want to reduce the paste volume to reduce solder balling, they print a "home plate" aperature. We print paste 1:1 with the pad. �IPC-7351 LP Wizard� is the library mainten
