Bob, Your answer says "square pad". Do you mean square pad or paste stencil?? The question indicated square paste. I guess either way might work on xray; sq pad/round paste or sq. paste/round pad. I haven't seen the square pad or paste on an xray, but it is an interesting method. Please clarify. Tks........DT At 11:57 AM 2/2/00 -0800, you wrote: >The square pads will give you better release of the paste, also the square >pads will help you see if the bga has reflowed properly when you x-ray them. > >-----Original Message----- >From: Larry Jindra [mailto:[log in to unmask]] >Sent: February 2, 2000 10:34 AM >To: [log in to unmask] >Subject: [TN] MiniBGA pad conflicts > > >I'm a little confused. J-STD-013 recommends 22 mil pads for 1.00mm pitch >BGAs, but the guideline for IPC7527 suggests 15 mil round pads with a square >paste opening. Is anyone out there having good luck with one or the other? >Why the large disparity? > >Thanks- > > > Larry Jindra > > TRW/Avionics Systems Division > > mailto:[log in to unmask] ph (858) 592-3424 fax (858) 592-3606 > > > >############################################################## >TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c >############################################################## >To subscribe/unsubscribe, send a message to [log in to unmask] with following >text in >the body: >To subscribe: SUBSCRIBE TECHNET <your full name> >To unsubscribe: SIGNOFF TECHNET >############################################################## >Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional >information. >If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or >847-509-9700 ext.5365 >############################################################## > >############################################################## >TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c >############################################################## >To subscribe/unsubscribe, send a message to [log in to unmask] with >following text in >the body: >To subscribe: SUBSCRIBE TECHNET <your full name> >To unsubscribe: SIGNOFF TECHNET >############################################################## >Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional >information. >If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or >847-509-9700 ext.5365 >############################################################## ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################