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August 2020

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TechNet <[log in to unmask]>
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TechNet E-Mail Forum <[log in to unmask]>, Jack Olson <[log in to unmask]>
Date:
Wed, 12 Aug 2020 21:34:48 +0000
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TechNet E-Mail Forum <[log in to unmask]>, Dwight Mattix <[log in to unmask]>
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Subject:
Re: Drilling positional tolerance (hole-to-hole)
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Dwight Mattix <[log in to unmask]>
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Drill position to etched pattern std capability is +/- 3 mils (76um).









-----Original Message-----

From: TechNet <[log in to unmask]> On Behalf Of Jack Olson

Sent: Wednesday, August 12, 2020 1:40 PM

To: [log in to unmask]

Subject: [EXT] [TN] Drilling positional tolerance (hole-to-hole)



If a spec says that PCB drilling positional tolerance is .0762 mm, doesn't that mean that the drill hole PATTERN can be off that much in relation to other features?

(like to board outline or copper pattern?) What is a safe number for hole-to-hole positional tolerance?

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