Quadrax Contacts

Product Quadrax Contacts Product Quadrax Contacts


Sandra Wildenstein
Product Manager
+1 (607) 563-5379


High-Speed Quadrax contacts consist of an outer contact with four inner contacts spaced to form two 100 or 150 Ohm controlled impedance differential pairs. 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.

Features & Benefits:

  • 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
High Speed Contact Guide
Quadrax Contacts Performance Specifications

Environmental Sealing: IAW connector specification
Corrosion Resistance: 500 hours salt spray
EMI Shielding: 360 degree shielding on each pair
Mating Cycles: 500 cycles
Voltage Rating: 500 Vrms max @ sea level
Dielectric Withstanding Voltage: 500 VAC RMS sea level
Temperature Range: -65C to 175C
Bandwidth: Up to 1.25 GHz
Data Rate: Exceeding 2.5 Gbps.
Voltage Rating: 500 Vrms max. @ sea level



Octonet, Quadrax, Differential Twinax D38999 Insert Arrangements

How to Order - D38999 Series III with Standard 100 Ohm Quadrax

Quadrax PCB Information

Quadrax Transition Adapters Part Number Guide

High Speed Contact Product Guide
The broadest and most reliable contact solutions when you need superior electrical performance, plus shielding to eliminate interference from outside electrical sources.
Is FAI Required?
Have you ordered from us before?

Part Number
Min Qty
Max Qty
Target Price
Delivery Date
Add Part