Hi Avi,

I've done some measurements on SU8(10) films at 10MHz and 10 GHz for
RF applications [1]. I measured a dielectric constant of 4.5 @ 10
MHz, falling to 4.2 at 10 GHz. Electrical breakdown was noted at
1.1*10^5 V/m^-1. Of course, these results only relate to films
produced under particular processing conditions. Also, our films were
found to be quite lossy at RF....

[1] J.R.Thorpe, D.P.Steenson and R.E.Miles "High Frequency
Transmission Line using a Micromachined Polymer Dielectric" IEE
Electronics Letters, Vol 34 No 12 pp 1237-1238

Rgds..

Jim.
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Dr Jim Thorpe
Research Fellow

Institute of Microwaves and Photonics
School of Electronic and Electrical Engineering
The University of Leeds
Leeds
LS2 9JT

United Kingdom

Tel: +44 (0)113 233 2049 (Office)
Tel: +44 (0)113 233 2084 (Lab)
Fax: +44 (0)113 244 9451
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