The PCB surface finish is ENIG.

 

From: TGAsia [mailto:[log in to unmask]] On Behalf Of Tan Geok Ang
Sent: Monday, October 13, 2014 2:00 PM
To: [log in to unmask]
Subject: Re: [TGAsia] Dry joints

 

What type of PCB surface finish are you using? 

The soak time seems too short as you can find some many voids in your
pictures.

  _____  

From: TGAsia [[log in to unmask]] on behalf of Justin Wu [[log in to unmask]
COM]
Sent: Monday, 13 October, 2014 11:27:53 AM
To: [log in to unmask]
Subject: Re: [TGAsia] Dry joints

Hi All,

 

We are facing the dry joints after reflow soldering and the defective rate
is 5%, could you share with me what reason for caused this case?

 

Note:

1.      The solder paste, component and PCB are unchanged;

2.      The component and solder pads are free of oxidation/contamination;

3.      The reflow soldering temperature profile as shown below:





 

Thanks in advance!

 

Best regards,

 

Justin 



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TGAsia是一个为业界同仁提供技术交流的平台。您可以在论坛上提出技术问题，交流行
业经验，寻找供应商等。请勿发送任何招聘，广告信息。（注：对于寻求供应商的邮
件，请勿回复[log in to unmask],请私下和发件人联系）。如您需要退出该邮件论坛，请
直接发送邮件至 [log in to unmask] ,谢谢。 



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This email has been scanned by the Symantec Email Security.cloud service.
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