Thank you, Stephen.
That info is very helpful at this point.
Jack

On Wed, Aug 21, 2019 at 4:36 PM Stephen Pierce <[log in to unmask]>
wrote:

> Jack,
>
> You're asking for Type V (w/ a non-conductive fill material)  and
> getting Type III (w/ soldermask material).
>
> The intent of Type III is to simply plug the through holes, whereas
> the intent of Type V is to completely fill the through holes. For type
> III, plugging with soldermask can be done from either side or both
> sides, the latter case being riskier because of the likelihood of
> trapping air and/or contaminants in the center of the hole (between
> the plugs). Type V assumes a separate (as opposed to soldermask),
> non-conductive material is used specifically to completely fill the
> holes prior to the application of soldermask.
>
> Fill material colors typically fall somewhere between white and gray,
> although I am aware of an OEM that specs a black color. No green.
>
> Stephen Pierce
>