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Coax Contacts

High-speed Coax contacts within a connector provide the shielding protection and in many cases, the RF/microwave performance needed in the circuitry of many applications. Amphenol® Shielded Contacts provide design versatility for electrical circuitry. Shielded contacts are used to eliminate interference from outside electrical sources when standard crimp or solder contacts are not enough. All popular series of Amphenol rectangular connectors are available with coax contacts. Diameters are standardized in sizes 4, 8, 12 and 16 so that coaxial contacts may be interchanged with power contacts in connector arrangements which include those sizes. Popular RG cable types and a variety of other commercial coaxial cables can be accommodated.

The use of coax contacts within a connector, compared to the use of individual coaxial/shielded connectors, offers advantages of savings in space and weight and no cross-mating difficulties. Coax and standard contacts may be mixed within the connector to meet special signal needs. The connector itself offers further protection and environmental integrity through the grommets and seals used, and the coaxial junction is protected by the connector outer shell.

PERFORMANCE SPECIFICATIONS FOR ARINC 600 COAX    
  Size 1 Socket and Pin (Crimp) Size 5 Socket and Pin (Crimp) Size 8 Socket & Pin (Crimp) 75 Ohm Size 8 Socket & Pin (Crimp) 50 Ohm
Temperature Range: -65°C to +165°C -65°C to +185°C -65°C to +125°C -65°C to +125°C
Impedance: 50 Ohms nominal 50 Ohms nominal 75 Ohms nominal 50 Ohms nominal
Rated Voltage: 1,000 Vrms at sea level 325 Vrms at sea level 325 Vrms at sea level 325 Vrms at sea level
Frequency Range: 0-8 GHz 0-500 MHz
1500-1700 MHz
0-500 MHz 0-500 MHz
VSWR: 1.70:1 0-500 MHz VSWR 1-30: 1
1500-1700 MHz VSWR 1.50:1
1-30: 1 1-30: 1
Insertion Loss: 0.3 dB     0.3 dB
Contact Resistance: 0.2 mΩ (body) 1.0 mΩ (body) 1.5 mΩ max (outer body) Outer body 12.0 Amp test current, 30 mΩ intial, 45 mΩ after test
1.0 mΩ (center) 2.1 mΩ (center) 10 mΩ max (center) Center contact 1.0 Amp test current, 15 mΩ intial, 30 mΩ after test
Insulation Resistance: 5,000 megohms mininum 5,000 megohms mininum 5,000 megohms mininum 5,000 megohms mininum
Dielectric Withstand Voltage(DWV): 2,500 Vrms at sea level 750 Vrms at sea level 750 Vrms at sea level 1,000 Vrms at sea level

MATERIAL SPECIFICATIONS:
  Size 1 Socket and Pin (Crimp) Size 5 Socket and Pin (Crimp) Size 8 Socket & Pin (Crimp) 75 Ohm Size 8 Socket & Pin (Crimp) 50 Ohm
Body Components Brass 1/2 HD per QQ-B-626
Beryllium per QQ-C-530
Brass 1/2 HD per QQ-B-626
Beryllium per QQ-C-530
Beryllium copper per ASTM-B-196 Copper alloy
Insulators: Per MIL-P 19468A Per MIL-P 19468A PTFE per ASTM-D-1710 PTFE per ASTM-D-1710-99 or equivalent
Crimp Ferrule: Copper, annealed Copper, annealed Brass per QQ-B-626 Copper alloy or brass per ASTM B-16
Center Contact:     Brass per QQ-B-626 Beryllium copper per ASTM-B-196 or copper alloy
Gaskets: Silicone rubber per ZZ-R-765 Silicone rubber per ZZ-R-765   Silicone rubber per ZZ-R-765
Plating: Gold per MIL-G-45204 Gold per MIL-G-45204 Gold per AMS per 2422, 50 microinches, minimum over 50 microinches nickel underplate per QQ-N-290 Gold per AMS 2422, 50 microinches minimum over 50 microinches minimum nickel underplate per QQ-N-290