Table of Contents
Description
Page
Description
Page
Amphenol
®
EMI/EMP Filter Protection Connectors
for Protection of Sensitive Circuits ........................................................ 1
EMI Capabilities ................................................................................ 2, 3
Filter Connector Options ....................................................................... 4
Filter Selection Data .............................................................................. 5
Effect of Temperature on EMI Filter Attenuation ................................... 6
Impedance Matching Formula............................................................... 7
Quality Assurance Testing .................................................................... 8
FCTV Series (Composite Tri-Start, MIL-DTL-38999 Series III
intermateable)
Design Features, Alternate Positions............................................... 9
Wall Mounting Receptacle ............................................................. 10
Jam Nut Receptacle....................................................................... 11
Box Mount Receptacle, printed circuit board mount ...................... 12
Jam Nut Receptacle, printed circuit board mount .......................... 13
FTV Series (Tri-Start, MIL-DTL-38999 Series III intermateable)
Design Features, Alternate Positions............................................. 14
Wall Mounting Receptacle ............................................................. 15
Wall Mounting Receptacle (UTS crimp)......................................... 16
Jam Nut Receptacle....................................................................... 17
Jam Nut Receptacle (UTS crimp) .................................................. 18
Box Mount Receptacle, printed circuit board mount ...................... 19
Jam Nut Receptacle, printed circuit board mount .......................... 20
FJT Series (MIL-DTL-38999 Series II intermateable)
Design Features, Alternate Positions............................................. 21
Wall Mounting Receptacle ............................................................. 22
Wall Mounting Receptacle, back panel mounting .......................... 23
Box Mounting Receptacle .............................................................. 24
Box Mounting Receptacle, back panel mounting........................... 25
Jam Nut Receptacle....................................................................... 26
Jam Nut Receptacle, minimum penetration ................................... 27
FLJT Series (MIL-DTL-38999 Series I intermateable)
Design Features, Alternate Positions............................................. 28
Wall Mounting Receptacle ............................................................. 29
Wall Mounting Receptacle, back panel mounting (UTS crimp)...... 30
Box Mounting Receptacle .............................................................. 31
Box Mounting Receptacle, back panel mounting (UTS crimp) ...... 32
Box Mounting Receptacle, printed circuit board mount ................. 33
Jam Nut Receptacle....................................................................... 34
Jam Nut Receptacle (UTS crimp) .................................................. 35
Jam Nut Receptacle, printed circuit board mount .......................... 36
Jam Nut Receptacle, minimum penetration ................................... 37
FSJT Series (Proprietary SJT intermateable)
Design Features, Alternate Positions ............................................ 38
Wall Mounting Receptacle ............................................................. 39
Wall Mounting Receptacle (UTS crimp)......................................... 40
Box Mounting Receptacle.............................................................. 41
Box Mounting Receptacle (UTS crimp) ......................................... 42
Jam Nut Receptacle ...................................................................... 43
FBL Series IV (MIL-DTL-38999 Series IV intermateable)
Design Features, Alternate Positions ............................................ 44
Box Mounting Receptacle, Wall Mounting Receptacle .................. 45
Box Mounting Receptacle (UTS crimp)
Wall Mounting Receptacle (UTS crimp)......................................... 46
FPT Series (MIL-C-26482 Series 1 intermateable)
Design Features, Alternate Positions ............................................ 47
Wall Mounting Receptacle ............................................................. 48
Box Mounting Receptacle.............................................................. 49
Jam Nut Receptacle ...................................................................... 50
Jam Nut Receptacle, minimum penetration................................... 51
FPTE Wall Mounting Receptacle................................................... 52
FPTE Jam Nut Receptacle ............................................................ 53
FAN Series (Filtered “AN”) (MIL-DTL-5015 intermateable)
Design Features, Alternate Positions ............................................ 54
Box Mounting Receptacle.............................................................. 55
Filter Adapters............................................................................... 56, 57
Transient Protection, MOV – Metal Oxide Varistor Connectors.... 58, 59
Transient Protection, Diode Connectors ....................................... 60, 61
Transient Protection, ESA – Energy Shunting Assembly.................... 62
Filter Accessories....................................................................................
Universal Header Assembly for Flex Print or PC Board
Connectors .............................................................................. 63, 64
Electrostatic Discharge (ESD) Protected Connectors ................... 65
How to Order Filter Connectors .................................................... 66, 67
EMI Filter Check List (for assistance in ordering) ............................... 68
Rectangular Filter Connectors from Amphenol Canada ............... 69, 70
EMI Filter/Transient Protection Specials ............................................. 71
Amphenol Sales Office and Distributor Listing................................... 72
For more assistance, contact your local Amphenol field sales office or:
Amphenol Aerospace
40-60 Delaware Avenue, Sidney, NY 13838-1395
Phone: 607-563-5011 or 800-678-0141
Fax: 607-563-5157
Web: www.amphenol-aerospace.com
NOTE: The connector products in this brochure were formerly known as Bendix
®
products. These products are now manufactured and sold under
the Amphenol
®
brand name. The name “Amphenol” will replace the name “Bendix” on products and literature in the future.
Due to space limitations, metric equivalents of dimensional data in this catalog have not been included. All dimensions given may be converted to the
metric system by the standard formula: dimension (inches) x 25.40 = dimension (millimeters).
Amphenol has the following and other patents which relate to the products described in this catalog:
U.S. Patent 3,764,943, U.S. Patent 3,840,841, U.S. Patent 4,029,386, U.S. Patent 4,264,116, U.S. Patent 4,275,945, U.S. Patent
4,431,251, U.S. Patent 4,440,463, U.S. Patent 4,583,810, U.S. Patent 4,707,048, U.S. Patent 4,707,049, U.S. Patent 4,741,710, U.S. Patent
4,746,310, U.S. Patent 4,747,789, U.S. Patent 4,768,977, U.S. Patent 4,789,360, U.S. Patent 4,932,900, U.S. Patent 5,163,853, U.S. Patent
5,164,873, U.S. Patent 5,167.537, U.S. Patent 5,195,014, U. S. Patent 5,198,958, U.S. Patent 5,211,582
Amphenol has additional patents pending, as well as patents and applications in other countries.
Amphenol Aerospace operates quality systems that are certified to ISO9001: 2000 by third party registrars.
Amphenol EMI/EMP Filter Protection
Connectors
for protection of sensitive circuits
Amphenol
®
EMI/EMP Protection Connectors offer the versa-
tility of standard connectors with EMI/EMP protection for
sensitive circuits. Internal housing of the EMI/EMP devices
eliminates costly and bulky exterior discrete protection
devices.
Virtually all major MIL-Spec cylindricals can be incorporated with
filter devices:
• MIL-DTL-38999
• MIL-DTL-5015
• MIL-C-26482
• MIL-C-27599
• MIL-C-83723
• MIL-C-26500
Amphenol offers filter connectors that include:
• EMP protection using diodes
• EMP protection utilizing metal oxide varistors (MOV’s)
• Filtered plug connectors
• Filtered hermetic connectors
• Filter connectors with ESD protection
• Combinations of filtering devices within one connector
package
This catalog focuses on the cylindrical connector offerings
from Amphenol with EMI/EMP filter transient protection. There
are also many rectangular filter connectors that are offered by
Amphenol which include:
• MIL-DTL-24308 D-Sub
• MIL-DTL-83513 Micro D
• ARINC 404/600
• DOD-83527 Rack and Panel
• MIL-DTL-83733 Rack and Panel
Rectangular filter interconnects are manufactured and sup-
plied by Amphenol Canada. See further information at the end
of the catalog.
Advantages of Filter Connectors:
• Reduction in overall weight and space with the elimina-
tion of external filter circuits
• Reduction of solder junctions
• Increase in reliability due to fewer connections
• Fragile filter elements protected from handling and
environmental damage
• Pre-testing from factory and ready for installation
®
FTV
Subminiature Tri-Start,
MIL-DTL-38999 Series
III, Metal or Composite
shells with Filter
Protection.
FLJT
Subminiature LJT,
MIL-DTL-38999
Series I with Filter
Protection.
Filter AN
Connectors
MIL-DTL-5015
Type Connec-
tors with Filter
Protection.
FJT
Subminiature JT,
MIL-DTL-38999
Series II with Filter
Protection.
FCTV with Stand-off
Flange
Filtered Tri-Start
connectors with
composite shells for
attachment to printed
circuit boards.
FPT
Miniature MIL-C-
26482 Series 1
with Filter
Protection.
Filter Contacts Combined with
High Speed Contacts
Filter Connectors can incorporate high
frequency coax, twinax,
triax, quadrax and
differential twinax
contacts.
MOV Connectors
MOV’s act as a variable resistor
to efficiently dissipate energy.
MOV can be pack-
aged singularly or in
combinations with
other EMI Filtering.
Header Assemblies
Allow for easy separation and easy
termination of connectors when
attaching to flex
or printed circuit
boards. Allow for
electrical testing
that would
adversely affect
sensitive diodes,
MOV’s or filter
capacitors.
1
EMI Capabilities
for maximum design flexibility
The Amphenol
®
EMI filter connector utilizes two manufacturing
technologies to provide the user with the most cost effective
performance across the frequency range. (For EMP perfor-
mance data, see pages 58-61).
The tubular design offers over 40 years of proven field reliabil-
ity. All filter contacts within the connector share a common
ground plane, which is connected to the connector shell. The
pin to pin isolation is 85 dB minimum at 100 MHz. The planar
design joins pins to a multi-layered ceramic forming an array
sub-assembly, with a peripheral ground which is connected to
the connector shell via a ground spring. Pin to pin capacitance
is less than 50 pf with a pin to pin isolation of 85 dB minimum at
100 MHz.
Filter contacts for both designs contain either a pi passive ele-
ment network comprised of a ferrite inductor and ceramic
capacitor, or a single capacitor.
For planar designs other filter networks are available, ie. T
Type, L-C Type, C-L Type and C Type. An encapsulant of
oven-cured epoxy in the rear provides:
• Mechanical and thermal insulation of the ceramic elements
– mechanical loading can be accomplished without capaci-
tor damage. Pins can be bent 90° and straightened with no
damage to the filter.
• Hermeticity (4.6 x 10
-3
cc/sec) – prevents water from enter-
ing through the rear of the connector in high humidity envi-
ronments. Amphenol recommends using metal protection
caps during cleaning operations.
Pi Type Tubular Contact Assembly
Ground Electrode
External Margin
Internal Margin
Ferrite Inductor
Pi Type Planar Array Assembly
Solder Washer
or Spring
Clip
Ferrite Inductor
Ground
Electrode
Solder Joint
Ceramic Capacitor
Hot Electrodes
Solder Joint
External Margin
Grounding Ring
Hot
Electrode
2
* More in-depth information on attenuation is available in:
L-1146, General Design Guideline for EMI Filters and/or
TVS (Transient Voltage Suppression) Connectors.
Also for further information ask for:
L-1145, How to Specify Filter Connectors.
EMI Capabilities, cont.
Planars, MOV’s, Tubular and Diode Contacts
Amphenol provides a wide range of filtering solutions. You
can select your options for your particular interference
threats - VHF, UHF, HF or other filter ranges, then couple
with a connector package of your choice. Or give Amphe-
nol your custom shell design requirements for assistance in
designing your unique filter solution.
EMI Filter connectors are intended for use in temperatures
from –55°C to +125°C. Attenuation will change with feed-
through current and temperature.*
To assure reliability, connectors may be subjected to an
attenuation performance test verifying proper assembly
and grounding of the filters. Attenuation data on filter per-
formance is stated in reference to a 50 ohm impedance
system in order to allow filter performance to be more eas-
ily translated into real world impedances.
Those interested in determining the expected filter perfor-
mance in an impedance system other than 50 ohms may
refer to page 7 of this catalog or may contact Amphenol
Aerospace for further assistance.
It is suggested that the user analyze his system require-
ments for EMI protection in the following areas:
• Working voltage (DC or AC and Frequency)
• Peak voltage
• Desired attenuation at a given frequency level
• Any special capacitance limitations
Planar Array
Assembly
Capacitor and
MOV Planars
Tubular Filters and
Diode Contacts
Definition of Filter Contacts:
MF
HF
VHF
UHF
Medium Frequency
50 dB performance between 300 - 2999 KHz
High Frequency
50 dB performance between 3 - 29 MHz
Very High Frequency
50 dB performance between 30 - 2999 MHz
Ultra High Frequency
50 dB performance between 300 - 2999 MHz
Contact Options
• Coaxial, concentric twinax, triax and quadrax contacts can be
included in arrangements of filtered contacts for signal or
power circuits (See Amphenol catalog 12-130, High Frequency
Contacts for Multi-pin Connectors).
• Filter contacts with differing cutoff frequencies can be mixed in
any given insert arrangement. (ratio 20:1 typical)
• Ground, insulated or filter contacts can be combined within the
same connector to meet unique or changing frequency protec-
tion requirements.
• Thermocouple contacts
• Diodes for EMP
Methods of Wire Termination
• Solder cup - wire termination
• PCB termination (Pre-tinning is available)
• Solderless wrap
• Amphenol
®
UTS (Universal Termination System) allows crimp
termination. It uses crimp insertable socket contacts on con-
ductor wires. Sockets mate with filter pins within the connector
body. (Socket type M39029/57). (For further contact informa-
tion, see catalog 12-090, MIL-DTL-38999 Series I & II).
• Weld terminal for thermocouple contacts
Filter contacts can be provided in most frequencies in con-
tact sizes 22 or larger. Consult Amphenol Aerospace for
availability.
Tubular connector designs will meet 3 amps RF current
from –55°C through +125°C. Planar connector designs will
meet 5 amps.
3
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