Smiths Connectors is now Smiths Interconnect


MarketID in (27,29,30,55,56,57,60)
  • ROS MDCX de 1.25:1 (standard) jusqu'à 10 GHz (max par connecteur accouplé)
  • ROS MDHC de 1.5:1 (standard) jusqu'à 40 GHz (max par connecteur accouplé)
  • Diamètre de contact 0,33mm
  • Impédance constante de 50 Ohms

Multipin coax connectors (MDCX) have low VSWR of 1.25:1 up to 10 GHz (max mated pair). Each spring loaded contact has a maximum diameter of 0.125" fitted into low profile metalized housing. 

Spring loaded High Frequency Micro-D Coax Connectors (MDHC) offer low VSWR up to 40 GHz (typ). These connectors have a constant 50 ohm airline impedance interface and are 30% smaller than our SCX coaxial connectors. Each coax contact has a maximum overall diameter of Ø.133" fitted into a low-profile metalized or plastic housing. MDHC coaxial contacts are a drop in replacement to Smiths Connectors MDCX RF contacts with increased frequency range from 10 GHz to 40 GHz. 

  • Insert arrangements available in 2, 4, 6, 8 and 10 way
  • mixed signal and power contacts available in hybrid arrangements
  • RoHS compliant

Mechanical & Environmental Specifications

Durability 1,000 cycles min.
500 cycles min. Signal Contacts
Corrosion MIL-STD-202 Method 101, Test Condition B
Temperature Rating -65˚C to + 165˚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
Mating/Unmating Force 1 lb. min.
Float Mount Constraints   0.010" full radial & 0.010 axial misalignment max

Materials and Finishes

Center & Outer Spring 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
Insulator PTFE per ASTM D-1710
Connector Plug/Receptacle Shell Aluminum per ASTM-B211/221, 6061-T6
Electroless Nickel Plate per SAE-AMS-C-26074
Compliance RoHS Compliant


Contact Current Rating 5 Amps max. for 0.030 Signal Pins
2.0 Amps max. for 0.015 Signal Contacts
DWV 500 VDC @sea level with 70% relative humidity
Insulation Resistance 5000 mega-ohms min. @ 200 VDC
Characteristic Impedance 50 Ohm constant airline impedance
RF HI Potential Withstanding Voltage 125 VRMS @ 5 MHz
Corona Level @ 70,000 Center contact to intermediate contact: 125 VAC
Permeability 2.0 max.
Frequency Range MDHC: DC-40 GHz
VSWR 1.5:1   (typ) Mated Pair  up to 40 GHz (MDHC)
1.3:1   (typ) Mated Pair up to 30 GHz (MDHC)
1.25:1 (typ) Mated Pair up to 10 GHz (MDCX)