They are in non-thermal areas.

Thank you,
Eddie Rocha
South Bay Circuits


Are the voids near the sidewalls of the circuit features or
are they
random in the non-thermal areas central to the resin mass.

Jeffrey Bush
Director, Quality Assurance and Technical Support
VERMONT CIRCUITS INCORPORATED
           76 Technology Drive - POB 1890
              Brattleboro, Vermont 05302
                Voice - 802.257.4571 ext 37
                    Fax - 802.257.0011
                       <http://www.vtcircuits.com/>


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Eddie
Rocha
Sent: Wednesday, December 28, 2005 3:46 PM
To: [log in to unmask]
Subject: [TN] (PCB fabrication) Lam Voids

I'm getting "LAM VOIDS" on a 16 layer board that we build.
The board is .140" thick and has 2 oz copper on layers 2,
8, 9, and 15. Any ideas on what might be causing these "LAM
VOIDS". The "lam voids" are about .004" x .010" in size and
x-sections show them between different layers such as the
surface of layers 2, 6, and 11.

I just began looking into this issue so I'll appreciate any
ideas.

Thank you,

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