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May 2014

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Subject:
From:
"Bush, Jeffrey D. (US SSA)" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Bush, Jeffrey D. (US SSA)
Date:
Tue, 13 May 2014 18:46:39 +0000
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What level of technology is the board?


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ramakrishnan Saravanan
Sent: Sunday, May 04, 2014 4:18 AM
To: [log in to unmask]
Subject: [TN] Solder Mask over Tin Lead Plating

Hi,

We received few PCBs from an European PCB manufacturer for Aerospace Industry. I am surprised to see Solder Mask is applied over tin lead plated tracks. My understanding is if u do reflow , the solder under the mask will melt and affect the mask. The correct method is applying Soldermask over bare copper isn't?. Kindly advise. regards,

R.Saravanan
 

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