You wrote: 
>
>
>
>My company is investigating building buried resistors into multilayer 
PCB's. 
>
>
>Is there a demand for PCB's containing buried resistors to be produced 
in 
>volume?  What type of technologies are contained on these boards 
>(line/space, BGA, buried via's, etc.)
>Are there any shops currently producing them in volume?
>
>nwbluez
>

Dear Stacey,

Our company, Ohmega Technologies, manufactures the buried resistor 
material, Ohmega-ply.  The demand for PCB's containing buried resistors 
has increased in a number of areas, especially for high speed resistor 
termination (series or parallel termination).  Many of these 
applications are of "high density" i.e. BGA, buried via's, controlled 
impedance, etc.  However, our product is also used in some very simple 
single and double sided circuit boards as well.

There are a number of prototype and volume printed circuit shops 
currently processing the Ohmega-ply buried resistive material.  If you 
would like more detailed information on the Technology, as well as a 
design guide/literature/list of current board shops please e-mail me 
your address at [log in to unmask]  You can also reach me by phone 
at (310)559-4400.

Regards,

Bruce Mahler
Vice President
Ohmega Technologies
Culver City, Calif.