Houri,
       I do not know of any thickness restrictions.  My bake systems have been
used on up to 40 microns thick Polymide.  For really thick films you may wish to
contact Micro chem or Dupont.  Bill Moffat

-----Original Message-----
From: Houri Johari [mailto:houri_j@WPI.EDU]
Sent: Monday, February 24, 2003 6:09 AM
To: mems-talk@memsnet.org
Subject: [mems-talk] thickness restriction of photosensitive Polyimide


Dear all,
Is there any limitation for the thickness of photosensitive polyimide
(ultradel 7501)?
Is there any available source for the limitation in the thickness of
different photosensitive polyimide, at all?
Thanks
Houri
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