Maybe it was a 2 mm pitch, a somewhat common size. Others that come to mind
are 0.125 and 0.156 inches.
Tom
----- Original Message -----
From: "Bob Stewart" <[email protected]>
To: "Discussion of precise time and frequency measurement"
<[email protected]>
Sent: Tuesday, June 25, 2013 10:03 AM
Subject: Re: [time-nuts] OT Prototype Boards
OK, I see in the wiki that 0.1" is by definition 2.54mm. I was taught it was
2.54001, but that's not right, either. But, if industry says that they're
defined as the same, then I'm the one out of date. =) I wonder what was with
that old prototype board. I can't find it, so it must be in a landfill, but
it was just exactly the wrong size to fit a chip. You could get the first
few pins in, but then the differences would be enough that no more would
fit.
Bob
----- Original Message -----
From: Orin Eman <[email protected]>
To: Discussion of precise time and frequency measurement
<[email protected]>
Cc:
Sent: Monday, June 24, 2013 11:35 PM
Subject: Re: [time-nuts] OT Prototype Boards
0.1" is 2.54mm by definition these days.
See: http://en.wikipedia.org/wiki/International_yard_and_pound
Now whether the board really is 2.54mm is an entirely different matter...
if it is, you should be fine with 0.1" pitch chips.
Orin.
On Mon, Jun 24, 2013 at 9:10 PM, Bob Stewart <[email protected]> wrote:
I need to get some largish prototype boards for my project. Has the
industry standardized on a 0.10" pitch for hole spacing? IOW, if the
ad
says 2.54mm pitch will I get a board that will fit American chips, or
will
I just get something metric sized for the landfill? I ask, because
I've
got a prototype board sitting around here someplace that is unusable
because the pitch isn't quite right. Needless to say, I'm ordering
this
from ebay from a seller in China or Hong Kong or someplace, points East.
Bob - AE6RV
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