Hello Olivier, According to my information there are only two companies who have already developed their own wafer tools for KOH etching with an electrochemical etch stop. All other companies I'd contacted offer wet benches and are ready to develop wafer tools but have no experience yet. Please contact: Mr. Hans Moritz, Hans Moritz Design Lindenberg Str. 30 D-34253 Lohfelden Germany Tel. +49 561 515181 FAX: +49 561 518166 e-mail: moritz-design@t-online.de Mr. John Carnevale Technical Systems & Service Inc. Phone: 001 (513)563-1115 FAX: 001 (513)563-1546 e-mail: kchlamc@fuse.net Regards, Roumiana Paneva At 13:54 12.03.99 +0100, you wrote: >Dear MEMS community, > >We are currently looking for tools for silicon wet etching of 4" wafer in KOH with a proteection of one (active) side of the wafer. > >We need a highly reliable mechanical tool for our production line, with very low induced mechanical stress. > >Does anyone know a qualified supplier for such a tool? > >Regards > >Olivier LEFORT >Microsensor design manager >Sensor Unit >SEXTANT Avionique >Phone : 33 4 75 79 85 19 >Fax : 33 4 75 79 86 06 >olivier.lefort@sextant.thomson-csf.com > > Dr. Roumiana Paneva X-FAB GmbH Haarbergstasse 61 D-99097 Erfurt Deutschland Tel: (+49) 361 42 053 21 FAX: (+49) 361 42 053 11