Josep, Bonding Al wire directly to Copper won't work. Try plating over the Copper with electroless Nickel (about 100 u inches) followed by electroless Au (about 5-10 u inches). This surface would then be solderable AND Al wire bondable. Regards, Bruce Misner > ---------- > From: J. M. Badia[SMTP:[log in to unmask]] > Reply To: TechNet E-Mail Forum.;J. M. Badia > Sent: Monday, March 05, 2001 7:41 AM > To: [log in to unmask] > Subject: [TN] Al wire bonding > > I'm unable to make a wire ultrasonic bonding (wedge bond) with Al wire > directly to cupper pad. > With your permission, I'd be interested to known if this bonding is > possible > > Thanks in advanced > > > Josep M. Badia > Servei de Recursos Tècnics > Tèlf/Fax: 977 559630/559605 > Univ. Rovira i Virgili > > -------------------------------------------------------------------------- > ------- > Technet Mail List provided as a free service by IPC using LISTSERV 1.8d > To unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF Technet > To temporarily halt delivery of Technet send the following message: SET > Technet NOMAIL > Search previous postings at: www.ipc.org > On-Line Resources & Databases > > E-mail Archives > Please visit IPC web site (http://www.ipc.org/html/forum.htm) for > additional > information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 > ext.5315 > -------------------------------------------------------------------------- > ------- > --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------