Thanks Mr. Zhao. Yes, we have claimed to PCB manufacturer accordingly. Thanks and best regards, Justin Wu Utilux South China Ltd Phone: +86-755-2850 7521 Fax: +86-755-2850 0927 E-mail Address: [log in to unmask] _____ From: TGAsia [mailto:[log in to unmask]] On Behalf Of WM-FQA-Zhao ZiDe Sent: Wednesday, April 13, 2011 2:59 PM To: [log in to unmask] Subject: Re: [TGAsia] Solder Ball Dear Justin Wu: From the photo, we can find the solder ball on topside PTH, due to solder mask in the PTH and caused the hot air chould not through the TH at the HASL process, if void the same question reoccur, the solder mask film need be revised. you can let the PCB manfuacture plant to enlarge the solder mask opening or plug the TH by solder mask. Many Thanks, Best Regards, Zhao Zi De QA Department World Mastery Technology Limited Tel:+86 769 85569149 Ext:862 Fax:+86 769 85262272 Email:[log in to unmask] ----- Original Message ----- From: Justin Wu <mailto:[log in to unmask]> To: [log in to unmask] Sent: Wednesday, April 13, 2011 12:08 PM Subject: Re: [TGAsia] Solder Ball Hi All, We have found some solder balls inside TH on the PCB (See below photo), however there is no exact matching of the defect mentioned in IPC, but according to IPC-A-610 Clause 5.2.7.1, the solder ball is accepted if it is embedded in the solder resist. So, would you please share your experience in such case with me? Thanks in advance! Best regards, Justin Wu Utilux South China Ltd Phone: +86-755-2850 7521 Fax: +86-755-2850 0927 E-mail Address: [log in to unmask] __________ Information from ESET NOD32 Antivirus, version of virus signature database 6037 (20110412) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ __________ Information from ESET NOD32 Antivirus, version of virus signature database 6037 (20110412) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 6037 (20110412) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________