Electronics Forum | Thu Mar 09 16:14:23 EST 2006 | operator
We are fixing to run a board with both pb and pb-free BGA's..double sided.. The board is RoHs compliant so I could go either way on the solder paste. I was thinking pb-free paste would be the best bet. Any opinions would be greatly appreciated. Th
Electronics Forum | Wed Mar 15 09:17:28 EST 2006 | mapell
Vick Russ is very correct. Get the paste material specificatioin. Please get your favorite data logger (ECD, KIC, DatPaq, etc..), attach some TC's and take a profile. This is the ONLY way to know what your reflow system is doing and how to alter.
Electronics Forum | Wed Mar 15 09:28:30 EST 2006 | mapell
Vick I would not think what your seeing is normal. Just guessing without a profile but.... - not reaching peak temperature - not enough soak time or mild ramp to burn away the flux - shortened TAL, not allowing proper time for the solder to wet - lo
Electronics Forum | Wed Mar 15 09:36:43 EST 2006 | vicknesh28
Thanks Marc. I will try the things that u have mentioned. I am guessing if the flux can find its way between the bottom foot of the lead and the paste, there has to be a gap between the solder paste and the lead when reflow takes place. As u have sai
Electronics Forum | Fri Mar 17 09:24:22 EST 2006 | russ
nothing appears to be out of line. Is this KOKI a no-clean or water soluble? You may want to try to hit 225 at the problem lead with a TAL of 70 sec. You may also want to remove the soak or at least shorten if you can. We were talking about a s
Electronics Forum | Tue Apr 04 09:39:14 EDT 2006 | pjc
No, Orbotech is pretty popular wordwide I'd say. This is suppose to be a technical forum, not an "opinion" forum. Just becuse an AOI machine works well in one appliaction does not mean in all. Plus, after sale support varies regionally. You should do
Electronics Forum | Wed Mar 22 03:00:09 EST 2006 | meritajs
Hi All, We have problem with Zevatech FS-730 This machine shows error E202062: "System error: T axis of head: Parameter error when T axis performs PTP action.(Kind of unit)" and it stop running. It does not pick up components. At low speed it works s
Electronics Forum | Fri Mar 24 09:33:26 EST 2006 | Rob
Hi Samir, That's cos it's already an offence to sell such an item in the EU. If you even paint a childs toy with a coating of more than 0.2% lead you can face 2 years in prison (admittedly with 3 nice meals a day, internet access, gym etc - I think
Electronics Forum | Mon Mar 27 21:09:29 EST 2006 | ms
Thanks Dave I'm not convinced the air is necessarily in the paste from manufacture - suspicious that it may be folding in during the change in direction of the print cycle - or as the paste travels across apertures. It is not necessarily in the fir
Electronics Forum | Wed Apr 12 10:41:09 EDT 2006 | tony_d
I agree with JME... You really need to do your homework when it comes to verifying if an AOI machine, or any other machine, will meet your requirements. Be sure to check out MIRTEC as well. Thes guys have got a very good name in the industry. My
.gif)
