Electronics Forum | Wed Dec 10 14:37:47 EST 1997 | Frank Murch
There is a direct relationship between adhesive strength and surface area. If you graph this it will be linear. The amount of the adhesive should be about 2/3 the gap between the pads. Pad designs change all over so a true and tried rule does not ex
Electronics Forum | Mon Jun 06 11:11:44 EDT 2011 | frcdave
Melanie, Given the examples of the solder joints in this and surrounding components, I would believe that there is no solder present.
Electronics Forum | Wed Jun 01 10:33:18 EDT 2011 | tzhangaclara
Hello, Attached is the X-ray picture of a SMT transistor. Please give me your opinion whether this is a good solder or not. From my view, I did not see any solder in the middle pad. I feel it is a production problem. But someone told me unless you s
Electronics Forum | Wed Jun 01 15:57:18 EDT 2011 | markhoch
Hi Melanie, Can you provide pictures of the solder connection itself? I've found that xrays can sometimes be misleading.
Electronics Forum | Tue Jun 07 00:10:13 EDT 2011 | Jacki
Hi Melanie The centre pin got solder but not fully as other 2 leads. U better provide the x'sistor from the top view.
Electronics Forum | Thu Jun 02 13:32:05 EDT 2011 | davef
Melanie: We're with AVFOM. If you don't believe there is solder on the pads, use a beer can opener to pop the component off the board and you will have your answer. Easy-peasy. Who ever told you 'if there is solder, there is voids' in solder connect
Electronics Forum | Mon Mar 30 10:43:31 EDT 2015 | dazdoc1977
Cheers Rob, I thought that I wasn't far from the true answer....I figured that if we were to use a "first piece assembly " quote to get a first off through smt production, This would include start to finish process....e.g Programming to first board
Electronics Forum | Tue Mar 31 09:22:48 EDT 2015 | rgduval
I've always hated using machine specs....they're always best case scenarios, and nearly never capture actual through-put rates. Personally, I don't like using first-piece rates, either...unless you're looking for worst case scenarios. Usually, the
Electronics Forum | Sun Dec 07 20:51:23 EST 1997 | john martin
part of my job is to id and source electronic components. i have an ongoing problem iding smt devices w/mfr codes in place of actual part numbers does a cross ref guide exist that will enable me to id a smt transistor(eg)by the marking codes on the d
Electronics Forum | Wed Jun 03 08:51:07 EDT 1998 | Pat Copeland
Can anyone tell me if there is a reference for smt component height specs on the bottom side of a board, which will also go through wave soldering. A current design I am reviewing has tant caps(7343) and a crystal on the back side. Should I only be
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