Electronics Forum | Fri Sep 17 09:55:16 EDT 2004 | soease
Hi russ, thanks for answers, I thought that playing with apertures was the solution if paste is able to lose from the screen with fine pitches. But I'll take in consideration all of your remarks for the next designs to be develloped.
Electronics Forum | Wed Nov 09 05:18:15 EST 2005 | pavel_murtishev
Good day, So, only material supplier recommendation is the basis for solvent selection. Am I right? BR, Pavel
Electronics Forum | Wed Nov 09 07:22:28 EST 2005 | davef
No. Aqueous Technologies, Kyzen, Petroferm, Zestron, Alpha Metals and many more companies have tested their chemical for use with many different production materials and should be able to discuss the effectiveness of their chemical. Beyond that, ma
Electronics Forum | Thu Nov 10 10:03:51 EST 2005 | C
Wow! that's amazing!, so you spray both sides, you wait for 2 minutes, and then you wipe everyting clean, and you do all this in 2 minutes, fantastic!
Electronics Forum | Tue Mar 04 16:09:05 EST 2008 | dphilbrick
Everything you wanted to know (and possibly didn't want to know) http://www.freescale.com/files/32bit/doc/package_info/AN2920.pdf
Electronics Forum | Tue Mar 04 17:06:31 EST 2008 | realchunks
Depends on your board? What finish? Solder mask between all pads? What pitch is the part? Will it machine placed? Don't forget proper profiling as well. 1:1 with machine placement should yield no issues.
Electronics Forum | Mon Apr 14 17:41:21 EDT 2008 | janz
Hello, That is working for us. If you have a look at the Indium or Cookson recommendation they are very similar. Just make few diffrent patterns of the BGA and find out what is workin for you. Regards Jan
Electronics Forum | Tue Aug 03 11:35:57 EDT 2010 | davef
Oh, more money than ... Then just go buy a tensionorometer like: Protec STG-series tension gauge http://www.protec.jp We have no relationship, nor receive benefit from the company referenced above.
Electronics Forum | Mon Dec 17 08:34:58 EST 2012 | emeto
I would scrap it. As you said part of it is going to be old paste. All manufacturers don't recommend mixing old with new paste because you change the rheology of the paste.
Electronics Forum | Fri Aug 21 09:36:50 EDT 2015 | esoderberg
Looking for better design information than is contained in IPC 7525A. Specifically the minimum trough width and length of the step to achieve the necessary paste reduction.
