While almost every via has a pad, the term "via in pad" typically means that
a via is present inside a SOLDER pad.  It can apply to a microvias, but is
not limited to them, can also apply to thru-vias.  From a PCB fab
standpoint, via-in-pads are typically filled and overplated to provide a
planar soldering surface.

Morgan Viggers
Field Applications Engineer
ISU Petasys
503.675.3877

-----Original Message-----
From: [log in to unmask] [mailto:[log in to unmask]] 
Sent: Thursday, June 18, 2020 4:09 AM
To: [log in to unmask]
Subject: [TN] Via in Pad Terms and Definitions BGAs

Fellow TechNetters:

    I would like a clarification in the following Terms:

Is Via In Pad, VIP, considered a micro via?    A typical microvia has a
capture land (where the via STARTS) and a smaller target land (where the via
ENDS.).
IPC-7095  5.1.3  Layering (Multilayers, Sequential or Build-Up)

Victor,