Smiths Connectors is now Smiths Interconnect


MarketID in (1,3,4,5,6,8,9,11)
  • Micro twinax available in threaded, quick disconnect, SMA and Micro-D size packages
  • 25% smaller in diameter than SMA coaxial connectors
  • Controlled impedance with tightly spaced PCB footprint spacing

Micro quadrax connectors maintain the signal to shield impedance throughout the mated connector pair (quad configuration applications exceeding 1 Gbit/sec) and are available in threaded versions including straight and right angle cable mount and PCB mount configurations

Micro Twinax line features matched impedance miniaturized connectors that provide the user with controlled impedance and tightly spaced PCB footprint spacing. These connectors are available in true differential twinax packages of  NDL, SMA and Micro-D size shells.

The NDL Micro Twinax Series is offered in threaded and quick disconnect styles and are 25% smaller in diameter than SMA coaxial connectors. The quick disconnect version has a diameter of .250” max and the threaded version has .250” Hex coupling nut.

Mechanical & Environmental Specifications

Shell Style -65˚C to + 125˚C
Durability 500 Mate/Unmate cycles min.
Coupling Nut
Torque (threaded)
2.3 in-lbs min.

Disengagement Force
(Quick Disconnect)

3 lbs max/3 to 5 lbs
Corrosion MIL-STD-202 Method 101              
Test Condition B
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

Shell & Inner Contacts Brass per ASTM-B16, Alloy UNS C36000
or BeCu per ASTM-B196, alloy UNS C17200, C17300
30 CRES per ASTM-A582
Gold Plate per MIL-DTL-45204 Type II, Class 1
Insulators PTFE per ASTM-D1710 or ULTERM 1000

Connector Plug/
Receptacle Shell

Aluminum per ASTM-B211/221, 6061-T6
Electroless Nickel plate per SAE AMS-C-26074
or Cadmium plate per SAE AMS QQ-P-416
Gasket /Seal Silicone Rubber per A-A-59588


Contact Current Rating 3.0 Amps max.
DWV 250 VDC max
Insulation Resistance 5,000 Mega Ohms min. @ 200 VDC
Bandwidth Up to 3 Gigahertz.
Data Rates >1 Gbits/sec
Differential Pair Cable Impedance 150 Ohm + 15 Ohm
100 Ohm + 10 Ohms
Signal to Shield Cable Impedance 75 Ohm + 10 Ohm
50 Ohm + 7 Ohms
All specifications are subject to change without notice