http://www.zeph.com/pencil.html hot air pencil... > rework: you mean take the original part off and rotated 90 degree and put > back on the same part? or you intend to put a new part on? If it is old > part - you might got difficulty due to damaged lead (coplanarity is > gone... unless you have enough space to push down using bar, etc.). if it > is new part, since you are going to do 10's thousands, you might get some > pre-form made to match the footprint and use hot air pencil or small batch > reflow - depend upon what your design is on the other side... dip on fine > pitch is "play with fire"... assume it is Cu-based leads. - my 1.5 > cents. > jk >> Hi Bob, >> >> 10's of thousands? Wow. I have never used dipping pastes, but it would >> seem >> to me that you would definitely need some sort of automation to >> accomplish >> this, have you looked at automated lead tinning machines? Ace >> Production >> Technologies, RPS Automation, and Corfin Industries make lead tinning >> systems. I would also guess that the solder would tend to stay towards >> the >> bottom of the lead and not coat the entire lead with the dipping paste. >> >> Good luck! >> >> Steve Gregory >> >> On Mon, Jun 29, 2015 at 10:25 AM, Bob Wettermann <[log in to unmask]> >> wrote: >> >>> Hi All: >>> >>> We have a project where we need to rework 10's of thousands of LQFP >>> 100/0.5mm pitch devices. All options are being considered. >>> >>> Since the PoP dipping pastes have come in to their own has anyone tried >>> using these pastes to dip for fine pitch rework? >>> >>> Thanks! >>> >>> -- >>> Bob Wettermann >>> BEST Inc >>> >>> >>> ______________________________________________________________________ >>> This email has been scanned by the Symantec Email Security.cloud >>> service. >>> For more information please contact helpdesk at x2960 or >>> [log in to unmask] >>> ______________________________________________________________________ >>> >> >> -- >> >> >> This email and any attachments are only for use by the intended >> recipient(s) and may contain legally privileged, confidential, >> proprietary >> or otherwise private information. Any unauthorized use, reproduction, >> dissemination, distribution or other disclosure of the contents of this >> e-mail or its attachments is strictly prohibited. If you have received >> this >> email in error, please notify the sender immediately and delete the >> original. >> >> >> ______________________________________________________________________ >> This email has been scanned by the Symantec Email Security.cloud >> service. >> For more information please contact helpdesk at x2960 or >> [log in to unmask] >> ______________________________________________________________________ >> > > > ______________________________________________________________________ > This email has been scanned by the Symantec Email Security.cloud service. > For more information please contact helpdesk at x2960 or [log in to unmask] > ______________________________________________________________________ > ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________