October, 2022
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Demand for Small Devices: How Industry Trends Affect Connectors
Continued from page 55 Adapting to Trends Micro-D connector technolo-
gy has been around for genera- tions. A smaller type of connector derived from the D-subminiature or D-sub (named for its D-shaped metal shield), the microminia- ture D, or micro-D, is about half the length of a D-sub, and has proven to be extremely success- ful over the last 40 years. Recently, Omnetics devel-
oped a new Latching Micro-D to retain the advantages of the pop- ular and proven micro-D design and update it to meet the requirements of smaller and more mobile technologies. These technologies tend to require more frequent module changing and rapid field replacement of systems in places where addi- tional tools may not be available. Digital signals from optical sur- veillance systems, low voltage differential signals and even lower current power supplies are some of the newer applications taking advantage of the quick- change design opportunities of the new Latching Micro-D con- nection system. The new technology is based
on the micro-D’s well-established reliability and performance spec- ifications. It also takes advan- tage of its predictable voltage and current ratings and the fact that it is adaptable for many board-mount, panel-mount and wiring configurations and pin counts.
The new Latching Micro-D
system has three major sections or components. Wired plugs are connected to cables or open wiring that includes optional metal or over-molded back-shells to protect against electromagnet- ic interference (EMI), and a strain- relief design that reduces wear on the cable interface to the back shell of the connector. The Latching Micro-D con-
nectors support a wide range of cable types that can include open wiring, jacketed cable sets, and even EMI-shielded braided cov- erings to protect signal intrusion and/or signal noise from escap- ing the cable and affecting other circuits. With the latch design, the
cable can be quickly disconnected in a simple squeeze-and-pull motion. An adapter can be added to existing micro-D connectors to allow current instruments to use the latch on cables in their system. The connectors are built
with highly rugged and compact designs using aluminum alloy 6061 shells with nickel plating, offering contact counts from 9 to 51 positions. Using a one piece beryllium copper flex pin design, the connectors are plated with
nickel/gold for robust service that operates from –67 to +257°F (–55 to +125°C), with a special version rated for 392°F (200°C). The Latching Micro-D’s high
reliability, lightweight, rugged, quick-connection system has been used in a number of newer designs for miniaturized equip- ment designs. Cable systems include braided shields to reduce EMI and cross talk. Adapting to the older jackscrew designs is done by adding a simple “latch-
ing adapter” to existing Micro-D connectors. As new electronics are
developed for a more portable and rugged environment, the miniature micro-D connectors are being used to fit into many limited capacity and limited weight design applications. Matching cable and wiring sys- tems are ready and can be imple- mented immediately, without adjustment or design changes. Designers can even use standard
solder-cup versions in their own lab for prototype and circuit development. The quick connec- tion features also help speed up the test and analysis process. Contact: Omnetics
Connector Corp.,
8840 Evergreen Boulevard, Minneapolis, MN 55433 % 651-747-7414 E-mail:
cpourtier@omnetics.com Web:
www.omnetics.com r
See at electronica, Hall B3 Booth 219
Page 57
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