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| Date: | Thu, 13 Aug 2020 11:55:33 +0000 |
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Generally the DTP is specified for all characteristics in the PCB - Drill, Image, Lamination, etc and .010" DTP is a standard value with many shops improving that capability for certain designs. With LDI and real-time Drill optimization systems a .007" DTP is viable.
Jeffrey Bush
Program Quality Engineering Manager
BAE SYSTEMS
Electronic Systems Division
C4ISR Solutions – Space Systems Group
P.O. Box 868
Nashua, NH 03061-0868
T: (603) 885-8137 | M: (603) 318.8056 | E: [log in to unmask]
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-----Original Message-----
From: TechNet <[log in to unmask]> On Behalf Of Dwight Mattix
Sent: Wednesday, August 12, 2020 5:35 PM
To: [log in to unmask]
Subject: Re: [TN] Drilling positional tolerance (hole-to-hole)
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EXTERNAL EMAIL -- This message originates from outside our organization.
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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