Electronics Forum | Tue Sep 04 07:34:02 EDT 2001 | Shvetang Dewashrayee
We have problems of solder shorts while using DEK Infinity printers. Some of the manufacturing lines are configured ina way that the side (bottomside) of PCBs mostly with passive parts is screened first and then the otherside (topside) of the PCBs w
Electronics Forum | Thu Sep 20 17:02:10 EDT 2001 | jschake
So that the entire forum benefits, I recommend that you post your findings to the main forum discussion page, instead of replying to this thread. You may even find that others who have not participated in the OnBoard Forum have similar experiences t
Electronics Forum | Wed Oct 03 12:02:04 EDT 2001 | kjwaskow
We are getting solder blobs forming in open areas of the BGA, between the center array and outer array. THe ceter array balls are starved of solder, so they are presumably the source. The theory we hold is possible moisture causing the solder to mo
Electronics Forum | Fri Nov 02 20:23:58 EST 2001 | caldon
You may want to also try MRSI. They have awsome machines for bridging the gap between Semiconductor and SMT. They have an excellent research group and can answer a mojority of your questions. http://www.mrsigroup.com they are located in Mass, USA. Da
Electronics Forum | Tue Nov 06 12:02:20 EST 2001 | davef
Consider searching the fine SMTnet Archives to get started. For instance: * http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=124&#Message1765& * http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&T
Electronics Forum | Tue Jan 21 16:28:02 EST 2003 | tony_sauve
Sorry I didn't close this one off last year... We had some failure analysis done on these PCB's ( 3D x-ray,microsectioning,SEM) and the results definitively proved that there was some contamination @ the base of the uvia's that had the voiding. It ap
Electronics Forum | Fri Dec 14 02:51:44 EST 2001 | genglish
This forum is becoming a salesmans dream! I agree with the first guy, check the archives as there is alot of information about cleaning and media. Our company uses a Kerry SC1000 machine very good process but mechanically we have had problems with t
Electronics Forum | Thu Dec 13 21:02:38 EST 2001 | davef
Contact the fabricator of this part for their recommendations. There is about as many different approaches to soldering thermistors as there is thermistors. You imply that this is a SMT style package. If that is correct, it's curious that the comp
Electronics Forum | Wed Jan 02 07:12:14 EST 2002 | Cyber_Wolf
Well, Mydata did offer some suggestions.One of the suggestions was to go to all tape and reel.(We currently run about 25% of our parts in vibes.)Unfortunately we are in the contract buisness, and that is not an option. We run alot of odd sized parts
Electronics Forum | Wed Jan 02 04:05:46 EST 2002 | ianchan
Well usually QA keeps the COC and x-section samples, for a designated minimum time period of 6 months, this time period is not set in stone and is defined by your ISO records retention period...each company bears varient importance to the retention o
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