JULY 2020 I DESIGN007 MAGAZINE 101
5
Letter to the Editor: Rick Hartley
Offers Addendum on App Notes
E
In the June 2020 issue of Design007 Magazine,
the I-Connect007 editorial team interviewed
design instructors Rick Hartley and Dan Beeker
regarding their belief that designers should not
trust app notes until they've been proven to
be accurate. After the issue was published this
week, Rick emailed us with a few more points
that he wished to contribute to the ongoing
app note conversation.
6
Beyond Design: Predicting and
Measuring Impedance
E
To control the impedance of high-speed signal
interconnects, one first needs to predict the
impedance of a specific multilayer stackup con-
figuration. Barry Olney describes how a preci-
sion field solver is arguably the most accurate
way to calculate the single-ended, edge-coupled,
and broadside-coupled differential impedance.
7
PCB Builder from Digi-Key Lets
Customers Order Directly
From Board Shops
E
On June 2, components dis-
tributor Digi-Key Electron-
ics announced the release of
PCB Builder, a tool that lets
customers have PCBs shipped
directly from the fabricator.
PCB Builder also allows customers to perform
file layer checks and receive instant quotes
from multiple fabricators. Andy Shaughnessy
spoke with Josh Mickolio, supplier business
development manager for Digi-Key, about the
development of PCB Builder and what this tool
means to PCB designers and design engineers.
8
Book Excerpt: Producing the
Perfect Data Package
E
The following is an excerpt
from Chapter 1 of Mark
Thompson's I-Connect007
eBook The Printed Circuit
Designer's Guide to... Pro-
ducing the Perfect Data
Package. Mark is in engi-
neering support at Prototron Circuits and a
Design007 columnist.
9
Just Ask Happy: The Proper Order
of Design Techniques to Improve
Connectivity
E
We asked for you to send in
your questions for Happy
Holden, and you took us up
on it! The questions you've
posed run the gamut, cover-
ing technology, the world-
wide fab market, and every-
thing in between.
J
This Month in Design007 Magazine:
Thermal Management—Keeping Cool
Starts From Within
E
Thermal management plays
a significant role in protect-
ing electronic circuitry. Jade
Bridges takes a fresh look at
popular subjects within the
field of thermal management
and explores what occurs
when devices overheat, as well as the benefits
of thermal gap fillers and how to best avoid
pump-out.
PCBDesign007.com for the latest circuit design news and information.
Flex007.com focuses on the rapidly growing flexible and rigid-flex circuit market.
Happy Holden
Jade Bridges
Josh Mickolio
