Has anyone out there done any work with microBGA's?  Specifically, I am
looking for information or discussions on:


1) Stencil sizes and apertures.


2) Microvias...  The good, the bad, and the ugly


3) Routing out on the PCB...  What are the limitations


4) PCB design for uBGAs...  The laminates, thicknesses, technology
(deposition or etch), pad design, etc.


5) Co-mingling uBGA's with 0.050" or 0.025" parts...


6) To clean, or not to clean...


7) X-ray requirements



I wish to start an evaluation on these parts and would like to find a good
starting point...


Thanks,

Michael Lang
ITT Avionics
[log in to unmask]
(201) 284-2917

##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
To subscribe:   SUBSCRIBE TECHNET <your full name>
To unsubscribe:   SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information.
For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311
##############################################################