Thanks to all the inputs. The holes on the pcb are non-plated through and no solder fill for through-hole component, is the solder joint robust and reliable? Our products are networking application and need high reliability, the power supply part is out-sourcing, we need to make sure the reliability of the out-sourcing power supply part. Best Regards Charming Chan -----Original Message----- From: Chris Ball <[log in to unmask]> To: [log in to unmask] Sent: Fri, Nov 20, 2009 12:36 am Subject: Re: [TN] Discussion on the reliability of single-sided PCB & PCBA I would say.... it depends. Some CEM1 out there in pretty harsh env. for any many years. Not recommending it, but it could be made to work, at east prior to PbFree processes and finishes.... Best Regards, Chris Charming Chan <chancharming@AOL .COM> To Sent by: TechNet [log in to unmask] <[log in to unmask]> cc Subject 11/19/2009 09:37 [TN] Discussion on the reliability AM of single-sided PCB & PCBA Please respond to TechNet E-Mail Forum <[log in to unmask]> ; Please respond to [log in to unmask] COM ello All, Our power system suppliers build single-sided pcb with paper-based ubstrates, the holes on the pcb are non-plated and no solder fill for hrough-hole component. As I know, paper-based substrates are generally sed for the pcb build of low-cost, low-reliability, consumer products. Our company sells CLASS 2 networking products, which are supposed to work n harsh environment. Is it reliable enough to use such single-sided power ssembly? Thanks a lot for kindly input. Best Regards harming Chan -------------------------------------------------- echnet Mail List provided as a service by IPC using LISTSERV 15.0 o unsubscribe, send a message to [log in to unmask] with following text in he BODY (NOT the subject field): SIGNOFF Technet o temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) o receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest earch the archives of previous posts at: http://listserv.ipc.org/archives lease visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 or additional information, or contact Keach Sasamori at [log in to unmask] or 47-615-7100 ext.2815 ---------------------------------------------------- his e-mail message is intended only for the use of the intended recipient(s). he information contained therein may be confidential or privileged, and its isclosure or reproduction is strictly prohibited. f you are not the intended recipient, please return it immediately to its ender at the above address and destroy it. --------------------------------------------------- echnet Mail List provided as a service by IPC using LISTSERV 15.0 o unsubscribe, send a message to [log in to unmask] with following text in he BODY (NOT the subject field): SIGNOFF Technet o temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) o receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest earch the archives of previous posts at: http://listserv.ipc.org/archives lease visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for dditional information, or contact Keach Sasamori at [log in to unmask] or 47-615-7100 ext.2815 ---------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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 -----------------------------------------------------