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GJB681A-2002 / MIL-C-39012
RF Coaxial Connectors
RF Coaxial Connectors
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N Series (GJB681A-2002 / MIL-C-39012)
N Series RF Coaxial Connector
The N series is one of the most widely used RF coaxial interfaces in the world, and the backbone of medium-power RF and microwave cabling. Its threaded coupling and robust 50 Ω construction give strong resistance to vibration and shock, high reliability and stable electrical performance up to 11 GHz, making it the default choice for antenna feeders, base-station jumpers, broadcast equipment and laboratory instruments. The range is manufactured to GJB681A-2002, the Chinese military standard equivalent to MIL-C-39012, with gold-plated brass or phosphor-bronze contacts, a PTFE dielectric and a VSWR of 1.3 or better across the band.
Key Specifications
Standard
GJB681A-2002
Impedance
50 Ohm
Frequency
DC-11 GHz
Product Description & Technical Specifications
TECHNICAL DATASHEET1. Product Overview & Features
The N series is one of the most widely used RF coaxial interfaces in the world, and the backbone of medium-power RF and microwave cabling. Its threaded coupling and robust 50 Ω construction give strong resistance to vibration and shock, high reliability and stable electrical performance up to 11 GHz, making it the default choice for antenna feeders, base-station jumpers, broadcast equipment and laboratory instruments. The range is manufactured to GJB681A-2002, the Chinese military standard equivalent to MIL-C-39012, with gold-plated brass or phosphor-bronze contacts, a PTFE dielectric and a VSWR of 1.3 or better across the band.
- Threaded 50 Ω interface qualified to GJB681A-2002 (MIL-C-39012).
- Frequency range DC to 11 GHz with VSWR ≤ 1.3.
- High resistance to vibration and mechanical shock for outdoor and mobile installations.
- 1500 V dielectric withstanding voltage and ≥ 5000 MΩ insulation resistance.
- Gold-plated brass pin and phosphor-bronze or beryllium-copper socket contacts.
- PTFE dielectric for stable impedance and low loss.
- 500 mating cycles; cable plugs, square-flange and bulkhead receptacles available.
2. Technical Specifications
| Executive Standard | GJB681A-2002 (MIL-C-39012) |
|---|---|
| Characteristic Impedance | 50 Ω |
| Frequency Range | DC – 11 GHz |
| Coupling | Threaded |
| Center Contact | Pin — brass, gold plated; socket — phosphor bronze or beryllium copper, gold plated |
| Insulator | PTFE (polytetrafluoroethylene) |
| Insulation Resistance | ≥ 5000 MΩ |
| Dielectric Withstanding Voltage | 1500 V |
| VSWR | ≤ 1.3 |
| Durability | 500 mating cycles |
| Body Styles | Straight and right-angle cable plug, square-flange receptacle, bulkhead receptacle |
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