Hi Victor,
An unsupported does not have plating - this is all defined in IPC-T-50.
Regards Steve Kelly

On 2015-09-21, 3:29 PM, "Victor Hernandez" <[log in to unmask]>
wrote:

>I did not received any responses, so decide to re-submit.
>
>Victor,
>
>From: Hernandez, Victor G
>Sent: Friday, September 18, 2015 9:14 AM
>To: TechNet E-Mail Forum
>Cc: Hernandez, Victor G
>Subject: Supported & Unsupported holes
>
>Fellow TechNetters:
>
>   Is it safe to stated that a SUPPORTED hole contains a plated through
>BARREL and an UNSUPPORTED holes does not contain a plated through
>BARREL...   I am measuring the hole break out on an external PTH annular
>ring.   IPC-2221  Figure 9-2 & Table 9-2.
>
>Victor,
>
>
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