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October 2007

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Subject:
From:
"Brooks,Bill" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Brooks,Bill
Date:
Fri, 5 Oct 2007 14:12:51 -0700
Content-Type:
text/plain
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text/plain (61 lines)
What if I wanted to have 3 mils in the barrel wall thickness?
How large a diameter hole would I need to drill it to get that in a .032
thick board? I can specify that it's okay to plate it shut... but what can I
reasonably ask for thickness of plating and how big a hole will I have to
specify or design it around?


Bill


-----Original Message-----
From: George Milad [mailto:[log in to unmask]] 
Sent: Friday, October 05, 2007 11:30 AM
To: [log in to unmask]
Subject: Re: [TN] Thru vias and plating thickness in the barrel ...

Most designers specify 1.0 mil in the barrel of the hole. Most board  
manufactures plate to that specification.
You probably could get away with  0.8mils.
Getting a minimum pf 1.0 mil in the hole could be challenging with aspect  
ratios >10:1.  

Regards
George Milad
George Milad
National Accounts  Manager for Technology
Uyemura International Corp (UIC)
249 Town Line Rd  
Southington CT 06489
[log in to unmask]
Cell: (516) 901  3874




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