I don't want to get in some kind of on line spat over this, but I recommend that whoever is doing the wirebonding calls out the surface finish! If that person has any experience, they will only commit to the finish after the vendor provides a sample they can test with. For many this would not be enough and they would send it out to a lab for full analysis so they can use it as a baseline and verify that the actual production boards have the same finish. Wirebonding issues mostly have to do with surface finish and contamination: Solve those and generally you can have a pretty good day! Wayne Thayer -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Kenneth Wood Sent: Wednesday, February 05, 2014 6:51 PM To: [log in to unmask] Subject: Re: [TN] Wire Bonding Spec? Jack, Use ENEPIG surface finish. A bit pricey but pretty good for wire bonding. Ken _____________________________________ Kenneth J. Wood Saturn PCB Design, Inc. [log in to unmask] (407) 340-2668 www.saturnpcb.com -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Jack Olson Sent: Wednesday, January 29, 2014 4:17 PM To: [log in to unmask] Subject: [TN] Wire Bonding Spec? newbie question: Do any IPC publications discuss wire bonding? What we are trying to do is similar to COB, but this is a new subject for us... thanks, Jack ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________