I've never heard that 10 Centigrade difference within a DIMM should cause warpage. If they were that fragiile, there ought to be a warning label on the package or on the emballage, and I've never seen any such. What couuld be reason for a temperature observandum is if the 10 C exceeds absolute maximum temperature during soldering, but that has not to do with warpage. If you really have such an issue, I think that will interest most TNettters. Inge ----- Originalagile, Message ----- From: "Charming Chan" <[log in to unmask]> To: <[log in to unmask]> Sent: Thursday, November 18, 2010 3:35 PM Subject: Re: [TN] Talking on reworking of 244 pin miniDIMM miniDIMM has 96mm length, twice size as normal BGA. The temperature difference between end miniDIMM and middle miniDIMM has 10C and more if heat with hot air or IR BGA reworking heater. DIMM distortion caused by temperature difference and PCBA twist, you know, may fail to rework. Any special solder irons or tools available in the industry to get miniDIMM reworking easier? -----Original Message----- From: Paul Edwards <[log in to unmask]> To: [log in to unmask] Sent: Thu, Nov 18, 2010 9:30 am Subject: Re: [TN] Talking on reworking of 244 pin miniDIMM Safest, best and most time cheapest way is to remove and replace.... Paul Paul Edwards urface Art Engineering -----Original Message----- rom: TechNet [mailto:[log in to unmask]] On Behalf Of Tan Geok Ang ent: Wednesday, November 17, 2010 3:56 PM o: [log in to unmask] ubject: Re: [TN] Talking on reworking of 244 pin miniDIMM Using a copper wire that is hot enough (depend on you available tools) o "suck out" the solder short if there is the issue though it is a bit ime consuming but do able. -----Original Message----- rom: TechNet [mailto:[log in to unmask]] On Behalf Of Joyce Koo ent: Wednesday, 17 November 2010 12:14 AM o: [log in to unmask] ubject: Re: [TN] Talking on reworking of 244 pin miniDIMM Hot air such as air vac? ------------------------- ent using BlackBerry ---- Original Message ----- rom: Charming Chan [mailto:[log in to unmask]] ent: Tuesday, November 16, 2010 11:11 AM o: [log in to unmask] <[log in to unmask]> ubject: [TN] Talking on reworking of 244 pin miniDIMM TechNet, SMT Tails of 244 pin miniDIMM are shadowing by the component housing, older irons can not reach SMT Tails, how to rework and repair if poor oldering? miniDIMM drawing link: http://www.molex.com/pdm_docs/sd/877822001_sd.pdf est Regards harming Chan ______________________________________________________________________ his email has been scanned by the MessageLabs Email Security System. or more information please contact helpdesk at x2960 or [log in to unmask] _____________________________________________________________________ --------------------------------------------------- echnet Mail List provided as a service by IPC using LISTSERV 15.0 o unsubscribe, send a message to [log in to unmask] with following text n he BODY (NOT the subject field): SIGNOFF Technet o temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) o receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest earch the archives of previous posts at: ttp://listserv.ipc.org/archives lease visit IPC web site ttp://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional nformation, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 xt.2815 ---------------------------------------------------- --------------------------------------------------------------------- his transmission (including any attachments) may contain confidential nformation, privileged material (including material protected by the olicitor-client or other applicable privileges), or constitute on-public information. 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