Electronics Forum | Tue Dec 16 04:20:51 EST 2003 | ex maintain leader
Hi Cesar, I' think is not soo critical, but take cre my 5Y experiences are focused mostly bad designed pcb's on outrunning project wich are transfered to eastern europe or to mini factories in austria. at wery old dek265 I see 45 degrees squeegue
Electronics Forum | Sat Feb 21 11:59:22 EST 2004 | Ken
sphericity and consistency are important. egg shaped, dog-boned shape snd tear-drops work against you and promote clogging and in-effective "transfer efficiency". One of the most signifficant factors will be brand/type. Not all fluxes are created
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
