[SI-LIST] Embedded capacitors

Could anyone advise on the following with regard to embedded =
capacitors;-

1. How much capacitance per mm2 can I expect ? I believe here that the =
key to this is how thin one can get the substrate. Any takers on this =
one ? I have seen the figure of 50 microns crop up a lot for thick film =
hybrids using embedded capacitors but I would like to know if this can =
be improved on? If 50 microns is the limit then the size of capacitors =
(surface area) is quite large (100 pF comes out at about 7.5 x 7.5 mm =
using Er 10 substrate).

2. What are the typical tolerances like for these components

3. What cost does this technology incur ?

Thanks in advance



Steve Rogers B.Eng (Hons) C.Eng IEE
RF Design Engineer

Micromill Electronics Limited
Leydene House
Waterberry Drive=20
Waterlooville Hampshire
PO7 7XX

Tel: +44 (0) 23 9236 6600
Fax: +44 (0) 23 9236 6673

Registered No. 1456922 (England). =20
Registered Office Brook Road
Wimborne, Dorset BH21 2BJ

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