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.
MARKETS
| 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 |