Of course as with all pwb questions, "It depends."  You can really 
only know if you quote your specific design with your supplier.

a) It's a small adder if you're talking uVia from a supplier that 
already does solid copper stacked uVia.
On a high volume handset you may see as much as a dime or 20c added 
per pwb. Maybe less depending on your design/supplier.
order of magnitude = dollars/panel.

b) It's a big adder if the fab doesn't have the uFill type capability 
and have to epoxy fill and overplate -- esp if the epoxy filling is 
outsourced to a service (e.g. HDI in SoCal). order of magnitude = 
10's or 100's of dollars/panel in low volume w/ outside processing.

c) It's an even bigger adder if there are competing rqmts for PTH or 
(heaven help you) pressfit PTH on the same pwb.  Been there, done 
that, do that.
order of magnitude = (ouch).

Filled/planar uVia in pad has become a standard requirement for many 
OEM's: particularly in high volume offshore with fine pitch BGA's.
We spec it on all our new product with .5mm and smaller BGA's. Some 
legacy stuff hasn't been converted since the particular design is low 
enough volume or yields well in SMT.

dw

At 10:30 PM 6/23/2008, Joe Lara (Select Circuits) wrote:
>Hard to say without specs but typically a considerable amount.
>
>
>Best Regards,
>
>Joe Lara
>Account Executive
>Select Circuits
>3700 W. Segerstrom Ave.
>Santa Ana CA, 92704
>Tel: (714) 825-1090
>Cell: (714) 932-5101
>Fax: (714) 825-1095
>www.SelectCircuits.com
>
>
>
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>-----Original Message-----
>From: Kirshenbaum Mordechai <[log in to unmask]>
>To: [log in to unmask]
>Sent: Mon, 23 Jun 2008 9:53 pm
>Subject: [TN] Extra cost of Copper Via Filling
>
>
>
>
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>
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>
>We decided to metal fill all the "Via in Pad" in our PCB's.
>What should be the add cost for this process
>
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