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]]
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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