Hi again,
Do I need to have a pad size greater than zero for a NPT hole (mounting) or should I make it equal to zero.
Jerry Gierach
PCB Design Tech
Electro-Pro, Inc.
W66 N205 Commerce Court
P.O. Box 409
Cedarburg, Wi. 53012
Phone: 262-376-4574
Fax: 262-376-4575
[EMAIL PROTECTED]
EDA Forum
Subject: [PEDA] NPT mounting holes
Hi again,
Do I need to have a pad size greater than zero for a NPT hole (mounting) or
should I make it equal to zero.
Jerry Gierach
PCB Design Tech
Electro-Pro, Inc.
W66 N205 Commerce Court
P.O. Box 409
Cedarburg, Wi. 53012
Phone: 262-376-4574
Fax: 262
el EDA Forum" <[EMAIL PROTECTED]>
To: "'Protel EDA Forum'" <[EMAIL PROTECTED]>
Subject: Re: [PEDA] NPT mounting holes
Date: Mon, 25 Mar 2002 09:53:05 -0800
Jerry,
I don't know of any fabrication issue with the pad size if it is a NPT
pad, as long as the pad is reasonably
It's useful to have a pad of finite size so that it'll be visible as a
reminder
in case you have (Show) Pad Holes turned off on the Design\Options
panel. Best to make an NPT pad up as a single-layer pad on the Drill
Drawing Layer; this avoids creating objects on the Mask Layers during
Gerber
I don't know of any fabrication issue with the pad size if it is a
NPT
pad, as long as the pad is reasonably smaller or larger then the hole
size.
Something that I've been caught by a couple of times is having a
pad on NPTH holes that are the same size as my fiducials. It
seems
AM
To: 'Protel EDA Forum'
Subject: Re: [PEDA] NPT mounting holes
Jerry,
I don't know of any fabrication issue with the pad size if it is a NPT
pad, as long as the pad is reasonably smaller or larger then the hole size.
Too close to the exact hole size and it can result in slivers of copper
It's useful to have a pad of finite size so that it'll be visible as a
reminder in case you have (Show) Pad Holes turned off on
the Design\Options panel. Best to make an NPT pad up as a
single-layer pad on the Drill Drawing Layer; this avoids creating
objects on the Mask Layers during Gerber
]
- Original Message -
From: Steve Baldwin [EMAIL PROTECTED]
To: Protel EDA Forum [EMAIL PROTECTED]
Sent: Monday, March 25, 2002 3:22 PM
Subject: Re: [PEDA] NPT mounting holes
I don't know of any fabrication issue with the pad size if it is a
NPT
pad, as long as the pad
Also I believe there is an extra process step involved when you have
pad area on a NPT hole.
I've talked to a couple of vendors about the implications of
PTH/NPTH holes. Their requirements are essentially that they want
copper of the minimum annular ring outside of the hole for PTH and
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