Mumtaz Bora <[log in to unmask]> wrote:

>Thank-you Tim. 
>
>
>Mumtaz Bora
>
>Senior Packaging Engineer
>
>Peregrine Semiconductor
>
>9380 Carroll Park Drive
>
>San Diego, CA 92121
>
>858-795-0112-direct
>
>858-731-9499 -fax
>
>[log in to unmask]
>
> 
>
>
>-----Original Message-----
>From: TechNet [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey (EHCOE)
>Sent: Monday, September 13, 2010 10:21 AM
>To: [log in to unmask]
>Subject: Re: [TN] FW: IPC-TM-650, 2.6.8, BAKING OF PWB QUESTION,
>
>Which is worse: knowing; or not knowing?
>IPC-TM-650, Method 2.6.8 - not knowing
>IPC-TM-650, Method 2.6.27 - knowing
>Dewey
>
>
>-----Original Message-----
>From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez
>Sent: Monday, September 13, 2010 10:02 AM
>To: [log in to unmask]
>Subject: [TN] FW: IPC-TM-650, 2.6.8, BAKING OF PWB QUESTION,
>
>Fellow TechNetters:
>
>   Which is worse:   The initial shock of the molten solder or the Constance thermal cycling?   On thicker boards, 220 mils, when the solder did not wick the entire barrel.  Is this a valid thermal shock?
>
>"X"
>
>-----Original Message-----
>From: Hernandez, Victor G
>Sent: Wednesday, August 18, 2010 9:22 AM
>To: TechNet E-Mail Forum
>Cc: Hernandez, Victor G
>Subject: IPC-TM-650, 2.6.8, BAKING OF PWB QUESTION, 
>
>Fellow TechNetters:
>
>   IPC-TM-650   2.6.8
>
>Can this test method be used for LF application:
>Sample is 24 layers mid plane, FR4, back/front side drilling,
>0.019 & 0.020 finish hole size,
>
>Any comments will greatly be appreciated.
>
>Victor ( "X" )
>
>
>-----Original Message-----
>From: TechNet [mailto:[log in to unmask]] On Behalf Of Paul Reid
>Sent: Tuesday, July 13, 2010 3:55 PM
>To: [log in to unmask]
>Subject: Re: [TN] BAKING OF PWB QUESTION
>
>My rule of thumb has been 105°C for 4 hours max.
>
>Consider
>- Time and temperature degrades the dielectric.
>- Time and temperature degrades the surface finish.
>- Lead/free applications have a greater need for baking as compared to tin/lead applications.
>
>
>Paul Reid 
>
>Program Coordinator 
>PWB Interconnect Solutions Inc. 
>235 Stafford Rd., West, Unit 103 
>Nepean, Ontario 
>Canada, K2H 9C1 
>613 596 4244 ext. 229 
>Skype paul_reid_pwb 
>[log in to unmask] <mailto:[log in to unmask]> 
>
>
>-----Original Message-----
>From: TechNet [mailto:[log in to unmask]] On Behalf Of Roberts, Jon (SA-1)
>Sent: July 13, 2010 11:35 AM
>To: [log in to unmask]
>Subject: [TN] BAKING OF PWB QUESTION
>
>Is there a rule of thumb or any best manufacturing practices of how long
>after baking does the PWB have to be processed?   Jon
>
>
>This communication is intended only for use by the addressee(s) named herein and may contain business confidential and/or legally privileged information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution, disclosure or copying of this e-mail and its contents is strictly prohibited. If you have received this e-mail in error, kindly notify the sender by replying to this message. In addition, please permanently delete the message and any attachments without copying or disclosing the contents. Thank you for your cooperation.                                                                                                        
>THIS DOCUMENT AND/OR SHIPMENT MAY CONTAIN COMMODITY ITEMS, SOFTWARE OR TECHNICAL DATA THAT IS CONTROLLED BY U.S. EXPORT LAW, AND MAY NOT BE EXPORTED OUTSIDE THE UNITED STATES OR TO NON U.S. PERSONS WITHOUT THE APPROPRIATE EXPORT LICENSE FROM EITHER THE U.S. DEPARTMENT OF STATE OR DEPARTMENT OF COMMERCE.
>
>
>______________________________________________________________________
>This email has been scanned by the MessageLabs Email Security System.
>For more information please contact helpdesk at x2960 or [log in to unmask] 
>______________________________________________________________________
>
>---------------------------------------------------
>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
>-----------------------------------------------------
>
>______________________________________________________________________
>This email has been scanned by the MessageLabs Email Security System.
>For more information please contact helpdesk at x2960 or [log in to unmask] 
>______________________________________________________________________
>
>---------------------------------------------------
>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
>-----------------------------------------------------
>
>______________________________________________________________________
>This email has been scanned by the MessageLabs Email Security System.
>For more information please contact helpdesk at x2960 or [log in to unmask] 
>______________________________________________________________________
>
>---------------------------------------------------
>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
>-----------------------------------------------------
>
>______________________________________________________________________
>This email has been scanned by the MessageLabs Email Security System.
>For more information please contact helpdesk at x2960 or [log in to unmask] 
>______________________________________________________________________
>
>---------------------------------------------------
>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
>-----------------------------------------------------
>
>______________________________________________________________________
>This email has been scanned by the MessageLabs Email Security System.
>For more information please contact helpdesk at x2960 or [log in to unmask] 
>______________________________________________________________________
>
>---------------------------------------------------
>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
>-----------------------------------------------------

______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________