Dave, Good response.You better hurry though if you want a Mountain Dew,since Doug has turned into a two-headed monster he is drinking them at twice the rate. Dewey > -----Original Message----- > From: David Hillman [SMTP:[log in to unmask]] > Sent: Tuesday, December 18, 2001 7:31 AM > To: [log in to unmask] > Subject: Re: [TN] Reliability of hand soldered solder joint. > > Hi Vit! Let me restate your question and come at it from a different > angle: > " Would you expect a solder joint which has proper wetting and acceptable > solder geometry if created by either manual soldering or machine soldering > to perform differently for a given use environment?". My answer would be > no > - the initial solder joint metallurgy would be different for a manual > solder joint and a machine solder joint but those differences equalize > within a week of assembly. If you follow best industry soldering practices > (using IPC JSTD 001 and IPC-A-610 requirements/recommendations) you would > not expect a difference in performance between the two methods. However, > with all that being said, the very nature of manual soldering leads to a > smaller window of consistency and repeatability in contrast to machine > soldering practices. You may have a larger failure rate for manual > soldering processes only because of the consistency window. Hope this > helps. > > Dave Hillman > Rockwell Collins > [log in to unmask] > > > > > "Sklenar Vit (RBAU-EB/MGE4)" <[log in to unmask]>@ipc.org> on > 12/17/2001 05:43:52 PM > > Please respond to "TechNet E-Mail Forum." <[log in to unmask]> > > Sent by: TechNet <[log in to unmask]> > > > To: [log in to unmask] > cc: > > Subject: [TN] Reliability of hand soldered solder joint. > > > Hi Techneters, > does somebody have statistical data or information regarding the quality > of > a hand soldered joint. What is the expected failure rate compared with a > solder joint formed by machine? Help! > > Thank you > > Regards > > Vit Sklenar MGE4VS > T: (61 3)9541 7734 F: (61 3) 9541 3909 > e-mail work: [log in to unmask] > e-mail home: [log in to unmask] > > Robert Bosch (Aust) , > 1555 cnr.Centre and McNaugton Road, > > Clayton , VIC 3169, Australia > > > > -------------------------------------------------------------------------- > ------- > 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 the following message: SET > Technet NOMAIL > 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) for > additional > information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 > ext.5315 > -------------------------------------------------------------------------- > ------- --------------------------------------------------------------------------------- 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 the following message: SET Technet NOMAIL 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) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------