Dear Mr. Werner, The wave soldering parameters are as follows. As indicated earlier this is a 2.4mm thick board CONVEYOR SPEED -- 110 CM/MIN ZONE 1 -- 100 C ZONE 2 -- 110 C ZONE 3 -- 120 C SOLDER TEMP -- 250 c We are also trying to get the flux parameters which we feel is critical. Hope this will give more clarity. Kindly give your feedback Rgds pradeep [log in to unmask] wrote at Wed Jul 15 09:20:05 GMT+05:30 2009: >Dear Mr.Werner, > >They claim, they did bake it at 120degC for 2 hours before they were wave soldered. Will moisture affect solderability ? Can you kindly brief how. We were under the impression that it affects only the PTH reliability. > >regards > >pradeep > >Werner Engelmaier /* wrote at Wed Jul 15 01:25:30 GMT+05:30 2009: >> Hi Pradeep, >>Did they bake the moisture out of the PCBs prior to wave soldering? >>Werner >> >> >> >> >> >> >> >>-----Original Message----- >>From: mp3 <[log in to unmask]> >>To: [log in to unmask] >>Sent: Tue, Jul 14, 2009 6:50 am >>Subject: [TN] Solderability >> >> >> >> >> >> >> >> >> >> >>Hi, >> >>We are a PCB manufacturer and we had supplied some 2.4mm thick PCBs to one of >>our customers who has complained regarding solderability issue. They say there >>are having issues with respect to blowholes / pinholes after wavesoldering. We >>had checked for solderability on the coupon and had ensured that everything is >>acceptable prior to the despatch. We repeated the same after receipt of the >>feedback and found the results to be OK. To simulate it, we sent a couple of >>bare circuits to a 3rd party assembler and got it wave soldered. The hole >>diameters are 2.55mm and 1.0mm . The photographs after wavesoldering trials are >>attached. We find it to be quite OK. We feel that since there are no components, >>and since the diameter is on the higher side, there will be a slight depression >>at the centre. But the customer insists that the trial boards too have a >>problem. Can you give a feedback on this after checking the attached >>photographs. We were asking our customer to check on the parameters like fluxing >>etc. And he says all are well in control. Any inputs to understand this issue >>better. >> >>rgds >> >>pradeep >> >> >>--------------------------------------------------- >>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 >>----------------------------------------------------- >> >> >> >> >> >> >> >> >> >> >> >>------------------------------- >>Micropack Ltd, Bangalore, India >> >> >>--------------------------------------------------- >>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 >>----------------------------------------------------- >> >> >> >> >> >> >>--------------------------------------------------- >>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 >>----------------------------------------------------- >> >> >> > ------------------------------- Micropack Ltd, Bangalore, India --------------------------------------------------- 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 -----------------------------------------------------