Amphenol Aerospace

Amphenol
Aerospace
Filter Selection Data
38999
III
HD
Dualok
II
I
SJT
Accessories
Amphenol ® EMI Connectors are produced with several types of filters.
They are all low band pass filters with the following configurations:
C
1
L-C
L1
2
1
C-L
L1
2
Aquacon
Herm/Seal
PCB
HIgH
SPEED
Fiber
Optics
Contacts
Connectors
Cables
EMI Filter
Transient
“C” filters involve a single capacitor. This simple,
cost efficient design excels at low frequency
performance which often exceeds the performance
of multiple-component configurations.
T
L1
L2
1 2
2
“L-C” filters excel when the source impedance
is less than the load impedance, often
outperforming “PI” filters at frequencies
lower than 10MHz
1
“C-L” filters are the inverse of “L-C” filters,
performing best when the source impedance
is greater than the load impedance
PI
L1
2
C1
C1
C2
83723 III
Matrix|Pyle
5015 26500
Pyle
Options Back- 22992
Others Shells Class L Crimp Rear
Release
Matrix
26482
Matrix 2
“T” filters combine the advantages of both the “L-C” and
“C-L” filter types in one package, with superior high frequency
performance.
1
C1
Cascaded PI
L1
Typical of the HF1 designation, “Cascaded PI” filters contain
three shunt capacitors and two series inductors, resulting in a
very steep insertion loss curve, outperforming all other filter
configurations at frequencies above 10MHz.
2
C2
L2
2
C3
Typical of MF1, VHF and UHF designations, “PI” filters are the
workhorse of the filter industry. Combining performance with
cost efficiency, this three-component filter has a steep insertion
loss curve, and excels at frequencies above 10MHz. “PI”
filters work well with a combination of different source and load
impedances
1
L1
Unbalanced PI
C1
2
“Unbalanced PI” filters have all the advantages of “PI” filters,
with superior performance when the source impedance is less
than the load impedance.
L2
2
C2
Consult Amphenol Aerospace for attenuation performance values
274
Contact Amphenol Aerospace for more information at 800-678-0141 or Filterapps@amphenol-aao.com • www.amphenol-aerospace.com