Have you tried the published Tantalum etches, or do you have to avoid use of HF? Peter & Judy Wright wrote:Does anyone know of a wet etch for tantalum nitride? We are using it for an underbump metalization at a subcontractor who does not have a dry etch capability. Peter Wright _______________________________________________ MEMS-talk@memsnet.org mailing list: to unsubscribe or change your list options, visit http://mail.mems-exchange.org/mailman/listinfo/mems-talk Hosted by the MEMS Exchange, providers of MEMS processing services. Visit us at http://www.memsnet.org/ Yahoo! Finance - Get real-time stock quotes