Drilling .006" vias mechanically is difficult but can be done and is done
here (with some conditions).
James
----- Original Message -----
From: "Franklin D Asbell" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, October 05, 2005 12:03 PM
Subject: Re: [TN] New Topic
> A good question and I am not suggesting we divulge trade secrets but for
> example, we are currently producing solder mask dams down to 1 mil with .5
> clearance. This not only involves controlling the solder mask exposure and
> developing precisely but also drill/image registration as these are for
DUT
> pads of 3 mils. This is where technology is taking us today. Now
continuing
> this example, I need to know how to drill a 6 mil via-in-pad (as features
> prevent laser drill as an option) and our supplier say's the best they can
> get us to is 8 mils. Would you share some knowledge for other knowledge?
How
> many assembler and end user participants in TechNet can answer the 6 mil
> drill question?
>
> And for those of you taking notes, these are hypotheticals (except we can
> indeed provide 1 mil solder mask dams).
>
> I don't ask very many fabrication questions on TechNet anymore as I rarely
> receive a response. Is this because they don't know? Are the questions
> beyond the capabilities of the majority of TechNet? Or the right people
are
> not seeing the question? I believe the latter.
>
> Just more things to ponder...
>
> Franklin
>
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Jim Henderson
> Sent: Wednesday, October 05, 2005 12:29 PM
> To: [log in to unmask]
> Subject: Re: [TN] New Topic
>
> With the auction of a United States PCB fab shop happening on a weekly
> basis, I wonder how much information a shop is willing to share can be
> attributed to the lack of questions or answers for that matter we are
seeing
> here. (Trade secrets stuff)
>
> Jim Henderson
> Colonial Circuits, Inc.
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Whittaker, Dewey
> (AZ75)
> Sent: Wednesday, October 05, 2005 12:05 PM
> To: [log in to unmask]
> Subject: Re: [TN] New Topic
>
>
> There have been some real whoppers told already on this forum. I don't
> know if we want to encourage the participation of additional
> fabricators.
> Dewey
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Franklin Asbell
> Sent: Wednesday, October 05, 2005 9:00 AM
> To: [log in to unmask]
> Subject: [TN] New Topic
>
> How can we increase the participation of pcb fabricators to the TechNet
> forum?
>
> Franklin
>
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