IPC-SM-782 3.5.3 discusses service life and Table 3.6 lists the service life typical of different usage categories. Maybe this helps. +Tom _____ Thomas A. Frayda, C.I.D. Printed Circuit Board Designer Detection Systems, Inc. 130 Perinton Parkway Fairport, NY 14450-9199 www.detectionsys.com TEL: 716-223-4060 x4365 FAX: 716-421-4263 E-mail: [log in to unmask] _____ -----Original Message----- From: Norman Moseng [mailto:[log in to unmask]] Sent: Monday, March 26, 2001 6:18 PM To: [log in to unmask] Subject: [DC] Product Lifecycle Does anyone know what the lifecycle of the boards designed to IPC standards is? Is it stated anywhere in the documentation? Thanks Norm -- \\\|/// ( 0 0 ) +-----------------------oOOO--(_)--OOOo---------------------------+ | | | Norm Moseng Voice 630-378-6258 | | Tellabs Inc. Fax 630-378-6721 | | 1000 Remington Blvd. Email [log in to unmask] | | Bolingbrook, Illinois 60440 MS 214 | | Cube A231E | | | | ooooO | | ( ) Ooooo | +---------------------------\ (----( )--------------------------+ \_) ) / (_/