[SI-LIST] Re: Looking for thin dielectric tape
- From: Peter Salmon <psalmon2000@xxxxxxxxx>
- To: kar_thik_v1@xxxxxxxxx
- Date: Thu, 15 Jan 2004 13:25:56 -0800 (PST)
Hi Karthik,
You might try "dicing tape". This is typically a blue-colored tape
that comes on a roll (say 9 inches wide) and is used to attach a wafer
to a dicing chuck inside a diamond saw. It is available in varying
thicknesses. The blade penetrates the tape a little but the tape holds
everything together until the dicing is done. I'm pretty sure you can
find vendors of this type of product by typing "dicing tape" into a
Google search field. Also, I've not checked the dielectric constant.
Good luck!
Peter Salmon
--- Karthik V <kar_thik_v1@xxxxxxxxx> wrote:
> Hello,
>
> I am a student at the State University of New York. I am
> looking for a double sided sticky dielectric tape (more like a sheet
> ) of thickness about 4mils (0.1mm) and with a dielectric constant of
> around 4, to use between copper sheets - to make a "temporary
> board". I tried things like epoxy, but it's almost impossible to get
> it so thin and still provide infinite DC resistance.
>
> Could anyone point me to places where I could look for this
> kind of stuff. Is there anything else I could try to get the
> dielectric (with Dk around 4) so thin ( apart from elaborate
> processes ) .
>
> thanks in advance,
> Karthik,
>
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