EMI Filter Transient - Amphenol Aerospace

AmphenolAerospaceFilter Selection Data38999IIIHDDualokIIISJTAccessoriesAmphenol ® EMI Connectors are produced with several types of filters.They are all low band pass filters with the following configurations:C1L-CL121C-LL12AquaconHerm/SealPCBHighSpeedFiberOpticsContactsConnectorsCablesEMI FilterTransient“C” filters involve a single capacitor. This simple,cost efficient design excels at low frequencyperformance which often exceeds the performanceof multiple-component configurations.TL1L21 22“L-C” filters excel when the source impedanceis less than the load impedance, oftenoutperforming “PI” filters at frequencieslower than 10MHz1“C-L” filters are the inverse of “L-C” filters,performing best when the source impedanceis greater than the load impedancePIL12C1C1C283723 IIIMatrix|Pyle5015 26500PyleOptions Back- 22992Others Shells Class L Crimp RearReleaseMatrix26482Matrix 2“T” filters combine the advantages of both the “L-C” and“C-L” filter types in one package, with superior high frequencyperformance.1C1Cascaded PIL1Typical of the HF1 designation, “Cascaded PI” filters containthree shunt capacitors and two series inductors, resulting in avery steep insertion loss curve, outperforming all other filterconfigurations at frequencies above 10MHz.2C2L22C3Typical of MF1, VHF and UHF designations, “PI” filters are theworkhorse of the filter industry. Combining performance withcost efficiency, this three-component filter has a steep insertionloss curve, and excels at frequencies above 10MHz. “PI”filters work well with a combination of different source and loadimpedances1L1Unbalanced PIC12“Unbalanced PI” filters have all the advantages of “PI” filters,with superior performance when the source impedance is lessthan the load impedance.L22C2Consult Amphenol Aerospace for attenuation performance values274Contact Amphenol Aerospace for more information at 800-678-0141 or Filterapps@amphenol-aao.com • www.amphenol-aerospace.com