thick sio2 etch: 8um

[Jim McVittie]

Bendik,

I understand that STS does have a new dielectric etch tool (see
http://www.stsystems.com/AOEarticle.html). I do not know the details 
of thier process but I am sure that it can not be run in our STS
etcher. What is available is our AMAT P5000. It has a thermal oxide etch
rate of 3000A/min however the resist selectivity is only around 3. A
polySi etch mask possibly could work for your need.  
 


			Jim McVittie	
-----------
On Wed, 16 Aug 2000, Bendik Kleveland wrote:

> Hi,
> I need to etch 8um dielectric. I have had some
> luck with pad etch before (better than boe), but
> I heard that sts could maybe do it. Any
> suggestions?
> Bendik
>