At 02:21 PM 8/7/2012, Phil Bavaro wrote: >I used to do a lot of pin in paste on connectors but it has been long >enough that I cannot remember if I eliminated the voiding completely or >not. My memory says that I achieved the 75% and did not have >unacceptable voiding. the older you get, the better you were. > I remember the worst part of PIP was the dragout >problem of inserting the pins through the solder paste and dripping on >the placement equipment. Don't have an documents to refer you to >offhand. Dean's honeycomb pre-forms sounds like a proven method albeit >more costly. > >-----Original Message----- >From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D. >Sent: Tuesday, August 07, 2012 2:16 PM >To: [log in to unmask] >Subject: Re: [TN] pin in paste > >Hi, Joyce. >Sorry, I tried different methods using paste and different brands of >paste (including pre-drying) on connector pins but could not escape the >voids entirely. Pre-drying the paste after insertion/before reflow did >reduce the voiding, but was not practical from an assembly standpoint. I >ended up using honeycomb (daisychain) pre-forms, with absolutely no >voiding but a few minutes of added assembly time. If anyone else has >ideas, I also would like to hear about them. > >-----Original Message----- >From: TechNet [mailto:[log in to unmask]] On Behalf Of Joyce Koo >Sent: Tuesday, August 07, 2012 4:04 PM >To: [log in to unmask] >Subject: [TN] pin in paste > >Joyce Koo >Materials Researcher - Materials Interconnect Lab Research In Motion >Limited >Office: (519) 888-7465 79945 >Mobile: (226) 220-4760 > >Hi, Calling on all of the gurus, Anyone has one or two good reference >regarding voiding minimization or voiding elimination for pin in paste? >Hopefully it is not in need of using performs. Many thanks for all your >help. >Best regards, > joyce > >--------------------------------------------------------------------- >This transmission (including any attachments) may contain confidential >information, privileged material (including material protected by the >solicitor-client or other applicable privileges), or constitute >non-public information. Any use of this information by anyone other than >the intended recipient is prohibited. If you have received this >transmission in error, please immediately reply to the sender and delete >this information from your system. Use, dissemination, distribution, or >reproduction of this transmission by unintended recipients is not >authorized and may be unlawful. > >______________________________________________________________________ >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 message and any attachments are solely for the use of the >addressee and may contain L-3 proprietary information that may also >be defined as USG export controlled technical data. If you are not >the intended recipient, any disclosure, use or distribution of its >content is prohibited. Please notify the sender by reply e-mail and >immediately delete this message and any attachments. > > > > >______________________________________________________________________ >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] ______________________________________________________________________