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Amphenol Canada Corp. a subsidiary of Amphenol Corporation, connector products which are used in Commercial, Industrial,
Communications, Military and Aerospace applications world-
is an international leader in the manufacture of Filtered
wide. Our expertise in understanding and supporting our cus-
Connectors and Specialty Interconnect Devices, and has been
tomers filter interconnect needs has earned Amphenol Canada a
pioneering EMI and EMP technologies for more than 40 years.
reputation of quality and excellence among the worlds leading
Located in Toronto, Canada, our ISO 9001 certified facility
users of electronic components.
employs approximately 400 people. Our activities are dedicated
to the design, development and manufacture of EMI/EMP filter
What is a Filtered Connector?
A filtered connector is the combination of filter elements in a capacitors are mounted inside the connector between each of
connector, forming one neat, compact interconnect device that the contacts and the connector ground shell.
can filter unwanted EMI. The most popular configuration is when
Better EMI Control With minimized lead inductances and Easy EMI/RFI Upgrade These compact filtered connectors
short, direct paths to ground of the filter, performance fit standard non-filtered connector footprints. For
will typically out perform the same filter components on improved EMC performance, simply replace the existing
a P.C.B. by a factor of three to one. connector with a filtered connector.
PCB Space Savings Incorporating filter elements into the EMC Compliance & Immunity EMI that is generated
connector, enables simplification of the required filter from the electronic device, radiated or conducted, will
schematic for the necessary performance plus a savings be re-directed to chassis ground through the connector
of 2-4 square inches. shell. This same device will also protect the system from
Cost Savings Filter elements, such as inductors and capaci- external EMI/RFI noise (such as radio transmitters, ESD,
tors, must no longer be purchased, stocked, assembled or natural phenomena such as lightning) in the same way.
or tested. Fewer components means greater reliability at
Choosing the Right Capacitance for Your Filter Connector
(1) Determine the highest frequency that the filter connector (3) Scan the Insertion Loss charts on page 2 to select a filter
needs to pass unaffected. which provides little or no insertion loss (filtering) at the
(2) Which frequencies are causing trouble, either with frequency determined from step 1, yet gives the greatest
emissions or with immunity to interference? possible insertion loss at the frequencies determined in step 2.
Nominal Insertion Loss values described in this catalog are hence, the filter connector may perform differently.
based on the Mil-STD-220 test method - a 50 ohm balanced load The final decision will be determined from actual EMI/RFI
and source impedance. Different systems will differ from this and testing of the equipment in question.