Electronics Forum | Thu Dec 28 16:17:23 EST 2006 | joey_dragon
Good tidings, all. I am looking for a machine that will allow us to mount a flat flexible strip (such as TennRich's B.Type) to a row of pads on a PCB. I have not much knowledge about the process, I guess I expect to see a machine with some hot bar.
Electronics Forum | Thu Jan 04 13:22:31 EST 2007 | patrickbruneel
Yes Samir I�m aware of this, but thanks for reminding me. I posted this in Oct 2006 http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=10978&#Message44694 This is not going to affect us much because China is more expor
Electronics Forum | Thu Feb 08 08:28:11 EST 2007 | mzaboogie
Good Morning Everyone, We have an application coming up with several BGA's on a RoHS assembly. One is a 25 mil ball on a 40 mil pitch, another is a 15 mil ball on a 40 mil pitch. In the past for leaded assemblies, we have used square apertures for 1
Electronics Forum | Thu Mar 01 12:08:33 EST 2007 | rob_thomas
It sounds like something is a little off here. ROHS compatible and ROHS capable parts are going to be ok with a leaded solder paste and processing unless you are building high reliability product.( some are going to argue that even high rel products
Electronics Forum | Mon Apr 23 15:44:31 EDT 2007 | flipit
Steve, You read it the same way I read it. Some of my coworkers thought that the 600 micron and under spec meant that you could use lead solder and be exempt at this component pitch. That is why I posted it on SMTNET. The exemption specifically s
Electronics Forum | Mon Apr 23 16:28:36 EDT 2007 | patrickbruneel
Chris, WEEE is great but RoHS doesn�t make since, here�s a couple of threads covering similar issues. http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=10341&#Message41486 http://www.smtnet.com//forums/index.cfm?fuse
Electronics Forum | Thu Oct 11 14:56:27 EDT 2007 | chef
Thank you- my point exactly and it starts in SMT- operators pulling the wrong paste from the fridge, touch up using the wrong solder wire, etc. My solution- GET THE LEAD OUT!!!!! I'm a CM- high mix, low to medium volumes. No steady all day every day
Electronics Forum | Mon Nov 19 19:14:07 EST 2007 | jmelson
I've been running 90% lead-free (still have a couple components I can't get reliably in RoHS compliance) with a peak temp of about 238 C, on standard FR-4 boards. The only real problem is the pad adherence is compromised, making rework of the boards
Electronics Forum | Thu Jan 31 18:14:40 EST 2008 | boardhouse
Hi Felix, First thing to verify is that your supplier is actually suppling you with the correct material. China is known for not keeping with the requested materials and will substitute if not controlled. I would recomend ITEQ, TUC or Nan ya for of
Electronics Forum | Sat Jun 21 23:15:07 EDT 2008 | mika
Also keep in mind that the CCGA column length tolerance is at minimum +/- 0.13mm from most part manufactures and they don't collapse in the same way as a BGA, therefore the paste height deposit could be critical in some rare circumstances. Board warp
