hello group, Does a user manual still need the above warning statement about some components and products needing to be installed by a service personnel if you now comply to AS/NZS/60950? or is there a new warning statment one needs to put in the manual per the AS/NZS 60950? that replaces the above 3260 clause?
thnak you Richard, From: [email protected] [mailto:[email protected]]On Behalf Of John Barnes Sent: Wednesday, January 11, 2006 11:35 PM To: Jim Eichner; [email protected] Subject: Re: Off-topic: lead free solder and reliability Jim, Since late December 2004 I've been doing an extensive study on designing lead-free, RoHS-compliant, and WEEE-compliant electronics. To date I have collected over 125 books and well over 5,400 papers/reports/ magazine articles/web pages on these subjects. I have links to over 2,350 of these documents that are available for free via the Internet, in my now-344-page Bibliography at http://www.dbicorporation.com/rohsbib.htm I've run across quite a few studies on the failure modes, reliability, and longevity of lead-free electronics. Personally, I think that we are going to be darned lucky if some of these lead-free electronic products outlast the manufacturer's warranty period-- regardless of whether they are: * In continuous use. * In intermittent use. * Sitting idle. OR * Still in the original, unopened box! Some problems that are showing up with lead-free solders and platings, that have been almost unknown for over 40 years with lead-bearing solders and platings, are: * Tin whiskers, causing short circuits. * Tin pest (tin plague, tin leprosy, tin disease), causing opens when the solder turns to dust at temperatures below 13 degrees C. * Sensitivity to physical shock, causing opens when a product is dropped even a short distance onto a hard surface. * Kirkendall voids, causing opens. * Conductive anodic filaments (CAF), causing shorts *inside* printed circuit boards. I bought myself a new computer shortly after Christmas, and I don't plan to buy any more new electronics for myself or my businesses -- unless I absolutely have to -- until at least July 2007. By then we may know whether lead-free electronics are worth a darn in any environment. Or maybe the Europeans will repeal the RoHS Directive after enraged consumers have lynched some of the legislators who enacted that misbegotten law... John Barnes KS4GL, PE, NCE, NCT, ESDC Eng, ESDC Tech, PSE, SM IEEE dBi Corporation Robust Electronic Design, Inc. http://www.dbicorporation.com/ (Author of Robust Electronic Design Reference Book, Volumes 1 & 2) - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
