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: [log in to unmask]">Justin Wu

To: [log in to unmask]">[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?

 [log in to unmask]">

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]

 

 



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