Siggi, IPC-A-610C defines Class I, II & III as follows. Class I-- General Electronic Products Includes consumer products, some computer peripherals suitable for applications where cosmetic imperfections are not important and the major requirement is function of the completed electronic assembly. Class II-- Dedicated Service Electronic Products Includes communications equipment, sophisticated business machines, and instruments where high performance and extended life is required and for which uninterrupted service is desired but not critical. Certain cosmetic imperfections are allowed. Class III-- High Performance Electronic Products Includes the equipment and products where continued performance or performance-on-demand is critical. Equipment downtime cannot be tolerated and must function when required, such as in life support items or flight control systems. Assemblies in this class are suitable for applications where high levels of assurance are required, service is essential, or the end-use environment may be uncommonly harsh. Paragraph 1.4.2 also states: The customer has the ultimate responsibility to identify the class to which the assembly is evaluated. Thus, accept and/or reject decision must be based on applicable documentation such as contracts, drawings, specifications, standards reference documents. Barry. -----Original Message----- From: Zweigart, Siegmund [ mailto:[log in to unmask] <mailto:[log in to unmask]> ] Sent: Thursday, February 14, 2002 7:29 AM To: [log in to unmask] Subject: [TN] Class 1 to 3 Hello Is it possible to find the definition of class1 2 and 3 in the internet? Thanks Siggi ---------------------------------------------------------------------------- ----- 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 e-mail to [log in to unmask]: SET Technet NOMAIL To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest 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 <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 ---------------------------------------------------------------------------- -----