Hi Leland,

There are no laminate defects visible from a macroscopic evaluation. The
crazing is seen by microsection evaluation only.

Sincerely,  

 

Paul Reid 

Program Coordinator  

PWB Interconnect Solutions Inc. 
235 Stafford Rd., West, Unit 103 
Nepean, Ontario Canada, K2H 9C1 

613 596 4244 ext. 229  

Skype paul_reid_pwb 
[log in to unmask] 

 


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Leland Woodall
Sent: December 10, 2013 10:38 AM
To: [log in to unmask]
Subject: Re: [TN] Crazing

Victor,

I know we've been talking about crazing, but are you seeing any
blistering or delamination on these boards as well?

Leland

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez
Sent: Tuesday, December 10, 2013 10:14 AM
To: [log in to unmask]
Subject: Re: [TN] Crazing

   I just started to notice more and more laminate crazing around PTHs
barrels walls on LF solder and hybrid laminates.   IMHO it is a concern
that needs to be address.
Victor,

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Pete
Sent: Tuesday, December 10, 2013 8:42 AM
To: [log in to unmask]
Subject: Re: [TN] Crazing

Back to the microsection validity question - are you sure they aren't
trying to say that your microsectioning process caused the crazing, not
that it isn't a correct inspection method?

Pete

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