Electronics Forum | Tue May 19 12:29:59 EDT 1998 | Richard Jackson
| Richard, | You may be encountering solder paste contamination | on the assembly during the printing process. Solder | will reflow on tin/lead plated lands therefore invisible. | If you are washing the assembly prior to inspection | then you are
Electronics Forum | Fri May 15 21:09:14 EDT 1998 | Steve Gregory
| | If you have a chance check out the MSD artical (Page 69) in April Electronic Packaging & Production. It is one of the worst articals with unsubstantiated conclusions I have ever seen. Notice Figure 3 on page 72, Caption indicates two simular co
Electronics Forum | Fri May 15 10:36:08 EDT 1998 | Justin Medernach
| List, | Is there any special disposal protocol needed when the | filters on the PC board washer becomes clogged? How | often do these filters become clogged? These filters | would trap lead and such so how much does it cost to | get rid of the f
Electronics Forum | Fri May 15 10:11:19 EDT 1998 | Justin Medernach
| We had some failures on an IC package that the manufacturer has put down to moisture inside the package, leading to popcorning. | This seems a bit odd, the package is a PLCC 84 which is quite thick. I have only seen this problem on thin packages. |
Electronics Forum | Sat May 16 19:31:27 EDT 1998 | Graham Naisbitt
Gentlemen, Please consider that ionic testing is designed only for detecting ionic contaminants. Yes there are instances of non-ionic contaminants that cause premature circuit failure. However, more importantly the prevailing specs are less than adeq
Electronics Forum | Thu May 07 21:25:56 EDT 1998 | D.Lange
| I am running a board that is .062" thick and has components that over hang the edge of the board by .090". I have bottom side smt components (chip caps and resistors only) and use the turbulent wave to help solder the components. The problem I am
Electronics Forum | Sat May 02 00:51:14 EDT 1998 | Rick
I agree with Steve...most certainly a placement occurance. I've seen this on many occasions with Panasonic equip. Change your feeder first and then check your component packaging. | I've never seen this before. Today, I got this tombstoning on Tan
Electronics Forum | Thu Apr 30 15:04:37 EDT 1998 | Steve Gregory
| Hello - | I am interested in obtaining information on the possibility of integrating a Vision Inspection System with an SMT line. I am aware of systems which may be used to gather placement data and such, but are there any systems which are able to
Electronics Forum | Thu Apr 30 15:39:43 EDT 1998 | Earl Moon
| | | Hello - | | I am interested in obtaining information on the possibility of integrating a Vision Inspection System with an SMT line. I am aware of systems which may be used to gather placement data and such, but are there any systems which are
Electronics Forum | Thu Apr 30 16:00:55 EDT 1998 | Earl Moon
| | | | | Hello - | | | I am interested in obtaining information on the possibility of integrating a Vision Inspection System with an SMT line. I am aware of systems which may be used to gather placement data and such, but are there any systems whic