Electronics Forum | Fri Feb 09 01:41:46 EST 2007 | Muhammad Haris
CHECKS FIRST that your BGA doesn't tilt from pick & place machine. SECOND lead free paste have some problem that it solder the component whereever pick&place put the component while solder pastes having lead, put the component on its PCB pad like a
Electronics Forum | Sun Feb 11 22:55:36 EST 2007 | M.Haris
As i was using this forum first time thats why i wrote two questions Eprom or otp ics AND solder paste content at the same time. Basically i m a SMT Assy Engineer and i m the only one for buying the solder pastes from the vendors. if anyone feel thos
Electronics Forum | Mon Feb 19 08:18:03 EST 2007 | realchunks
That's why you have to read between the lines of any article. Even with data from a paste manufacturer, it's still a bit fuzzy on how their paste will actually work. Not many companies have their data that solid, so it's better to experiment and me
Electronics Forum | Tue Feb 13 16:05:38 EST 2007 | darby
Kevin, I'm using a 1700W with no problems so far. I have recently completed trials on nine different paste brands on a 1500 as well. Remember the tunnel length is no different between a 1500 and a 1700.... Let me know what paste you are using and I m
Electronics Forum | Tue Feb 13 15:20:12 EST 2007 | billyd
Fellas: I'm having a tough time with voiding with my lead free water soluble paste under my large BGAs. I know some is almost inevitable, but this is more than I'd like. This is with a slope of .9, soak of 60 seconds, above 217 for 85 seco
Electronics Forum | Wed Feb 14 08:15:08 EST 2007 | CK the Flip
I agree with Rob that voids are often times paste-dependent, and it's all about the type of flux that's used. The cause of the voids, as you all know, is outgassing of flux which has nowhere to go with BGA's. Some paste mfgrs. will recommend going
Electronics Forum | Fri Mar 02 14:43:28 EST 2007 | stimpk
Are you using lead free paste also? Are all the other parts on side 1 ROHOS ? etc.. can they handle your leadfree profile. Those need answered 1st. But to answer your question. Yes you can run the BGA side 1st ( hopefully with leadfree paste and ho
Electronics Forum | Fri Mar 02 10:00:11 EST 2007 | jseagle
Check out ECS refining, they will recycle your paste and dross and cut you a check. We usually send 1 55 gal drum of dross and 1 55 gallon of waste and get a check back for ~$150. You can also contact the solder suppliers they usually have recycle
Electronics Forum | Thu Mar 15 13:27:45 EDT 2007 | Pete
We had a customer do a similar thing. We notified our customer and educated them on what was happening. We were instructed to try one and report on the results, as the vias were supposed to be filled (and weren't). We pasted and reflowed and as su
Electronics Forum | Wed Mar 14 20:06:54 EDT 2007 | vshan
Hi All i need some help here, currently experiencing connector leg shifted due to solder paste shifted from pad ~0.3mm. I did adjusted the reverse/forward X, Y and titah but still shifted. Product : flex circuit with 28 connector on the panel. Each
