Electronics Forum | Tue Feb 01 21:51:05 EST 2000 | Dave F
Roni: Ron gives good advice on the thickness of your Electroless Nickel - Immersion Gold (ENIG) solderability preservative. Several additional comments are ENIG: � More expensive than OSPs and HASL. � Much flatter surface than HASL, similar to OSP
Electronics Forum | Sat Jan 29 13:06:18 EST 2000 | Graham Naisbitt
Todd, All liquid coatings are Newtonian - they follow gravity so they do indeed run away from sharp leads and edges. Silicones are generally worse because they have very low surface energy - although this is an asset when trying to get under compone
Electronics Forum | Wed Jan 19 23:24:03 EST 2000 | armin
Hi, We have a couple of pcb's with PTH Crystal. We are looking for a spacer to be placed between the metallic body of the crystal and the via pad/land as they tend to short if wave soldered without a spacer. The spacer we are looking for is somethin
Electronics Forum | Fri Jan 07 01:05:40 EST 2000 | Dennis O'Donnell
I suggest you check out as many vendor at first as possible. Price varies greatly depending on your requirements. Once you find a company that has a price range that you are comfortable with, most can provide you with their formula so that you can
Electronics Forum | Wed Dec 29 15:42:34 EST 1999 | Mike Naddra
Justin, I would be currious as to your customers application, and if the temperature delta and rate are great enough to cause solder joint failures as a function of mismatched Tce then you may want to consider that even if you are able to identify
Electronics Forum | Wed Dec 22 05:42:19 EST 1999 | Wolfgang Busko
Hi John, I�ve seen problems some sites have or had with bridging problems in the wavesolder process with 1206 and 0805. Adjusting the system and focussing on the flux parameters sometimes improved things. With some older systems it was hard to get s
Electronics Forum | Mon Dec 20 07:59:04 EST 1999 | Wolfgang Busko
Hi Mike, many questions and there is no simple answer. How did you manufacture your add-on-boards ? Do you think you can handle the processes that go along with assembling SMT- and THT-Boards ? Before you start determine what you gonna do: - How man
Electronics Forum | Tue Dec 24 17:06:00 EST 2002 | MA/NY DDave
Hi, Lots of good answers and I am sure questions in the above. I have too many questions to really know whether your idea is a good one, as it could be, or one that will cause you more problems. Based on the size of the PWB that you will buy and t
Electronics Forum | Thu Dec 16 11:27:39 EST 1999 | C.K.
Hey Folks: I just want to get an idea how many of you use in-line or off-line visual inspection for solder paste deposition? At my company, we have one off-line, and it inspects for paste height. It's not always consistent either. Sometimes, it g
Electronics Forum | Tue Dec 14 11:13:43 EST 1999 | Chris May
Paul, I have (as many have) come across this problem due to misregistration of resist at the PCB fab. You didn't say if these boards are inexpensive double sided or costly multis. I know this shouldn't make a difference on quality but I would tend t
