Quadrax Contacts
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Quadrax Contacts


High Speed Quadrax contacts consist of an outer contact with four inner contacts spaced to form two 100 or 150 Ohm controlled impedance differential pair. Both contacts, when used in Amphenol MIL-DTL-38999 Series III and ARINC type connectors, provide an excellent alternative for harsh environment applications such as: Ethernet 100 Base-T-100 Ohm, Gigabit Ethernet 1000 Base-T-100 Ohm, Fibre Channel-150 Ohm, IEEE1394B FireWire-110 Ohm.


  • Four strategically spaced inner contacts form two 100 or 150 Ohm matched impedance differential pairs
  • Outer contact has rugged wall section for durability
  • Available in size 8 crimp termination style
  • Also available in size 8 with PC tails
  • Requires modification of MIL-DTL-38999 connector to accommodate keyed contacts

Quadrax contacts are gold plated, crimp termination Finish of mating contact parts: supplied with 0.000050 min. gold over nickel on mating parts. Consult Amphenol for availability of other finishes.

High Speed Protocol Guide

Contact: High Speed

Sandra Wildenstein



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NEW! High Speed Contacts Guide

The NEW High Speed Contact Guide is easy to use and now your can sort by size, cable, impedance, series and type for a part number and termination instructions.

Termination Service Instructions

Contact Us

Amphenol Aerospace
40-60 Delaware Avenue
Sidney, NY 13838-1395



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