Electronics Forum | Mon Dec 09 20:34:20 EST 2002 | MA/NY DDave
Hi I hear you, and you are right, yet most good process engineers strive to make future life a little easier by going back to the designers and making some alterations that don't affect performance. Now if we did a 6 sigma type analysis than this p
Electronics Forum | Fri Jan 17 09:38:20 EST 2003 | Grant Petty
Hi, We have a BGA that uses .4mm diameter PCB pads on the BGA itself, however we have decided to use .5mm pads on the PCB, to help paste release from the stencil. Is this a bad thing, having different size pads on the PCB compared to the BGA itself
Electronics Forum | Fri Feb 07 16:10:14 EST 2003 | MA/NY DDave
Hi Gee, It seems funny to comment on your own post. I notice that the original poster and a respondent, like me, are striving to create some voiding by design to improve the way this joint will form. NEAT!! I still think that those vias as DaveF p
Electronics Forum | Tue Feb 04 09:03:45 EST 2003 | Russ Roberts
Greetings, I am pretty new to SMT production, and have learned much from this forum. I am getting ready to build a CCA with many 0402 parts that are really close together. I consider these fine pitch. The board also has two QFPS, so my stencil design
Electronics Forum | Mon Apr 21 06:26:28 EDT 2003 | Grant
Hi, We have a SMT production like, however we have very little experience with through hole assembly. We design everything to be completly SMT based, however connectors are the only part of our product that still requires through hole assembly. Cur
Electronics Forum | Tue Aug 26 09:30:56 EDT 2003 | Jim Z
Marc, There are many types of nylon used in the connector industry and some are designed to be used in high temperature (225-250C) oven reflow applications. These high temp nylons are usually types 4/6 and 6T. It sounds like you are either using a
Electronics Forum | Tue Sep 16 10:31:50 EDT 2003 | mantis
Medium should be fine,is it only one particular reference designator all the time or is it sot23's in general that are moving.Also If it is only one ref designator what are the surrounding parts and how close are they. Gabriele, Could i have your em
Electronics Forum | Wed Sep 17 12:30:09 EDT 2003 | russ
I can guarantee that vibrating ovens will be detrimental in double sided reflow for any of the larger parts. I find it interesting about BTU and there "vibrating" oven. I had a couple of these in the early days and they did indeed vibrate. However
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
