Class 2 merely refers to the acceptance level of the completed fab. Often is the case product classified as Class 2 in fact meets or exceeds Class 3 requirements. If you have product certified to Class 2 and need to use it in a Class 3 application look close at the test/inspection data, or have the fabricator revisit the data, if it does in fact meet Class 3 have the recertify it to that. Things that made need to be addressed may be copper layer thickness, material type used, hole wall thickness, etc. Franklin -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Grant Emandien Sent: Tuesday, June 20, 2006 2:37 AM To: [log in to unmask] Subject: [TN] Class 2 PCB Fabrication vs Class 3 Assembly Compatibility T'netters, How compatible is a class 2 PCB to achieve a class 3 assembly? My question presumably leads to process capability and PPM levels, but does a class 2 then not cap what an assembly process can achieve during assembly? Regards Grant ********************************************************************** Relevant company disclaimers are available at the following addresses: Tellumat (Pty) Ltd e-mail: mailto:[log in to unmask] Web: http://www.tellumat.com/email.aspx ********************************************************************** --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e 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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------