Electronics Forum | Mon Feb 23 16:36:21 EST 2004 | www.smtinfo.net
Alpha Metals sells a paste developed especially for 0201's and 0.5 mm pitch BGA's. I have no idea if if does what it promises, but it might be worth to give it a try. See http://www.alphametals.com/omnixsolder/pdfs/OM_6106.PDF
Electronics Forum | Fri Feb 20 13:25:00 EST 2004 | russ
Help! i just rec'd my next job from our marketing people and it has a .5mm pitch BGA 8mmX8mm size. Along with this kit came the stencil. So, I have never placed this fine of a BGA before and I am pretty worried about the stencil releasing the past
Electronics Forum | Wed Aug 31 00:50:59 EDT 2005 | grantp
Hi, We have a new part we need to mount, and it's a .5 mm pitch BGA with .3 mm diameter pads. That's a lot smaller than we have done before, and we currently use 1 mm pitch BGA's with .5 pads. Has anyone does .5 mm pitch BGA's and what needs to be
Electronics Forum | Wed Aug 31 02:12:20 EDT 2005 | siverts
BGA's with pitch
Electronics Forum | Mon Feb 23 14:13:13 EST 2004 | russ
Just to finish this up, We did manage to print this little part with good success without any major re-setup of printer settings I would not recommend these parameters for production to anybody however. You can print 2-3 boards before it starts to
Electronics Forum | Wed Aug 31 10:50:50 EDT 2005 | aj
Grant, We run the exact same process as you described. 5 thou stencil, 1:1 ratio aj
Electronics Forum | Thu Sep 01 14:30:06 EDT 2005 | lsmith
I have recently tried electroform (100% nickel) stencils. Expensive but awesome paste release. 5 mil foil 10 - 15% aperture reduction for gasketing
Electronics Forum | Wed Aug 31 09:06:11 EDT 2005 | PWH
Agree with Siverts. We do a build that has 0.3mm pad diamter BGA (0.8mm pitch - distance from pad center to pad center) and 0.5mm dia. BGA balls. Stencil specs. are: 5 mil. thickness, square BGA pad aps. (1:1, 0.3mm square aps), laser cut. Seems
Electronics Forum | Wed Aug 31 11:02:28 EDT 2005 | Jason Fullerton
We are using one BGA that has 7 mil bumps on a 20 mil pitch. We use the manufacturer's recommended pad and aperature layout, which is an 11.8 mil square overprint on a 6 mil land. At 11.8 square, you need to use a 4 mil laser cut or a 5 mil e-form st
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