Electronics Forum | Thu Oct 01 07:03:55 EDT 2009 | davef
We doubt that Humiseal 1A33 is causing opens in your assemblies. We'd guess the opens occur earlier in the process, but are not hard failures. So, you pass your tests. When applied, the conformal coat flows into the gap in the ball crack and insulate
Electronics Forum | Thu Oct 01 03:03:29 EDT 2009 | cunningham
what we are getting is open circuits not every BGA is failing we use Humiseal 1A33 and currently there is no masking instruction for around the BGA
Electronics Forum | Wed Mar 07 01:46:24 EST 2007 | Kent
Did anyone know about the Shinapex Placement Sys? it is good for reballing BGA/CSP/QFN.
Electronics Forum | Fri Feb 25 12:04:21 EST 2005 | davef
Land grid devices [ie, BCC�, LGA, QFN, MicroLeadFrame�, etc] are essentially BGA devices with the balls removed and with no solder on the pads. Search the fine SMTnet Archives for background discussion.
Electronics Forum | Mon Apr 04 08:35:08 EDT 2005 | py (france)
how to replace a qfn on a board , and how to weld it ? special stencil solder cream and as a BGA ?
Electronics Forum | Sun Aug 10 21:57:25 EDT 2014 | cmchoue
Does IPC definition for "QFN Void Ration" ? Like IPC 7095 susgestion the BGA Void ratio.
Electronics Forum | Wed Feb 13 17:36:36 EST 2019 | SMTA-Joe
What machine was this with? A BGA rework station?
Electronics Forum | Sun Sep 08 22:38:23 EDT 2019 | sssamw
what's your final verified ok stencil thickness for the QFN and BGA?
Electronics Forum | Wed Dec 20 00:24:21 EST 2017 | jineshjpr
Can anybody suggest how to get reflow soldering datasheet of different components like BGA, QFN , QFP etc with different MPN. Nowadays almost all the datasheets are specifying only about functions alone and nowhere the data available for reflow solde
Electronics Forum | Thu Oct 08 08:15:39 EDT 2009 | kpm135
We've used both 1A33 urethane and 1B31 acrylic coating on our SMT assemblies with great success for many many years. This is with components of all shapes and sizes including a 9 ball micro-BGA. We apply the coating in every way imaginable and we hav
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