Smiths Connectors is now Smiths Interconnect


MarketID in (1,3,4,9,11)
  • Data rates exceeding 2 Gbit/Sec
  • Bandwidth: Up to 3 GHz
  • Can be driven via matched impedance differential pair interconnections for board to board high speed data transfer
  • Ideal for reliable, high-speed transfer of digital audio/aideo signals

Smiths Connectors offers a complete line of differential Quadrax connectors, contacts, and cable assemblies for high speed Ethernet, Firewire, and Fibre Channel applications.  Differential pair quadrax connectors offer superior performance in high speed matched impedance data-on-demand applications.  The signal to signal and signal to shield characteristic impedance is maintained throughout the connector pair.  

Smiths Connectors offer reverse gender Quadrax contacts to provide a more robust assembly for harsh environment applications. This alternative configuration places the stronger and larger diameter inner socket contacts within the more exposed Quadrax pin contact insulator. The more fragile inner pin contacts are then placed within the Quadrax socket contact insulator minimizing the potential of alignment damage due to mishandling on both sides. With this arrangement, Smiths Connectors offer the most robust high speed Quadrax contacts available today. 

  • Matched impedance +/- 10 ohms for 100 ohm
  • Standardized backshells
  • Designed for ease of assembly quadrax construction
  • Full crimp termination

Recommended  Backshells: 

M85049/21 (str) • M85049/88 (str) • M85049/89 (45° w/extender)

Smiths Connectors only recommends the use of backshells that avoid  tight bending radii or high compressive forces being applied to cables that may upset the high frequency performance of the connector cable assembly

Testing Capabilities

Smiths Connectors Quadrax and Twinax interconnects are characterized for testing eye pattern, jitter, skew, and insertion loss on differential pair 100 ohm high speed Gigabit Ethernet applications with a wide variety of testing protocols. We utilize the Agilent E5071C 4 port network analyzer to measure the differential pair TDR impedance between Twinax connectors, cable assemblies, and quad cable Ethernet and Fibre Channel interconnect systems ensuring the most accurate acquired signal for high speed communications testing. The E5071C 4 port network analyzer is capable of highly accurate 100 Ohm differential measurements up to 20 GHz and can measure Eye Diagrams up to 16 Gbps. 

Mechanical & Environmental Specifications

Durability 500 Mate/Unmate cycles/min.
Corrosion MIL-STD-202 Method 101, Test Condition B
Temperature Rating -55°C to + 125°C
Shock MIL-STD-202 Method 213, Test Condition B
Vibration MIL-STD-202 Method 204, Test Condition B
Thermal Shock MIL-STD-202 Method 107, Test Condition B

Materials and Finishes

MIL-DTl-38999 Shells

Aluminum per ASTM-B211/221 6061-T6
Electroless Nickel per SAE AMS C-26074

Insulators PTFE per ASTM-D1710
Ultem per ASTM-D5205
Quadrax Contacts Brass per ASTM-B16, Alloy UNS C36000 or
BeCU per ASTM-B196, alloy UNS C17200, C17300
Gold plate per MIL-DTL-45204 Type II Class 1
Notes Quadrax contacts are common ground


Contacts Current Rating 3.0 Amps D.C. max.
Insulation Resistance 5.000 MegaOhms min
Bandwidth Up to 3 Gigahertz
Data Rates Exceeding 2 Gbits/sec
Differential Pair Cable Impedance 100 Ohm + 10 Ohm
Signal to Shield Cable Impedance 50 Ohm + 7 Ohm
All specifications are subject to change without notice