Tom,
Thank you for your hard work and the free download. It is most
generous.
Best regards,
Steve Smith
Project Engineer
Staco Energy Products Co.
"Your tailored power solutions provider"
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-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of Tom
Hausherr
Sent: Tuesday, March 20, 2012 11:23 AM
To: [log in to unmask]
Subject: [DC] Updated "Designer's Day" Presentation
All,
Our web-server crashed so you'll have to wait until it comes back
on-line.
Nick Ban and our web team are hot on it.
Thanks for the fantastic feedback and excellent dialog. In the IPC
world, Jack Olson & Mike Buetow are correct that the term Footprint is
the component package dimensional data and Land Pattern is what the
Footprint solders to. The term "Land" is what the component lead
attaches to. However, no one uses the term "Land" because all the CAD
vendors call it a "Pad".
It's what we deal with every day.
At IPC APEX "Designer's Day" I made an announcement -
"This is my last presentation... that I will ever give using Metric Only
dimensional data in my Power Point files. From now on I will always
include both Metric and Imperial dimensions side by side with Imperial
being the dominant number and (metric) secondary until there is clear
evidence that the industry has successfully transitioned. And I will
always use the term Footprint when referring to PCB library parts
because that is the term most widely used. And I will refer to Chip
components using the EIA Imperial names of 1206, 0805, 0603, 0402 until
the component manufacturer's refer to them using the IPC metric names
3216, 2012, 1608, 1005."
Some of you reported typos in the Power Point Presentation. I updated
the website last night -
http://www.pcblibraries.com/Forum/ipc-apex-expo-2012_topic6.html
The updates also affected the "Proportional Through-hole Padstacks"
chart - Proportional_Through-hole_Padstacks.pdf
<http://www.pcblibraries.com/Forum/uploads/1/Proportional_Through-hole_P
adst
acks.pdf> (you can still access this file on our server)
People have been asking me off-line to explain the Proportional
Through-hole Padstacks and I will post the explanation of the
mathematical formulas here (once the server is back on-line) -
http://www.PCBLibraries.com/forum/forum_posts.asp?TID=15
<http://www.PCBLibraries.com/forum/forum_posts.asp?TID=15&PID=60#60>
&PID=60#60
One more thing, PCB Libraries, Inc. is 6 weeks away from launching the
5th generation IPC Calculator and after hearing your feedback we
officially named it "PCB Footprint Calculator". This is brand new "coded
from scratch"
over the past 8 months and the Designer's Day Power Point Presentation
is the blueprint for the new tool. Example: The user can insert the
component dimensions in metric and then switch to mils and all the
Footprint dimensions are converted to 1 mil increments, the Footprint &
Padstack names are generated in Mil units. However, if you stay in
metric units, the Footprint (Land Pattern) dimensions and library name
will be in Metric Units. Example: you enter the component dimensions for
a 3216 using metric dimensions and when you switch to Mils the Footprint
name automatically changes to 1206 and all the Footprint dimensions are
in 1 mil increments.
The new tool boosts many new features including rotation to create the
IPC, IEC or EIA Zero Component Orientation. Coming May 1, 2012 when the
official PCB Libraries.com website opens. This is a Free download
without any registration required, it will have regular updates that
will have an auto-update notification and it will come with the Texas
Instruments "Standard Parts" product line which includes over 35,000 TI
part numbers.
It's our gift to the electronics industry. No strings attached.
Tom
Tom Hausherr
President
PCB Libraries, Inc.
13730 Sorbonne Court
San Diego, CA 92128
858.592.4826 Office
858.859.5371 Cell
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