N-Type Connector Series

Developed in the 1940's, the N-Type connector series was the first to offer true microwave performance. The N-Type connector was developed to satisfy the need for a durable, weatherproof, medium-size RF connector with consistent performance through 11 GHz.

There are two families of N-Type connectors: Standard N (coaxial cable) and Corrugated N (helical and annular cable). Their primary applications are the termination of medium to miniature size coaxial cable, including RG-8, RG-58, RG-141, and RG-225. RF coaxial connectors are the most important element in the cable system. Corrugated copper coaxial cables have the potential to deliver all the performance your system requires, but they are often limited by the performance of the connectors.

Intermodulation distortion, a major concern in today's communications systems, is consistently low with corrugated cable connectors. Typical performance is -125 dBm (-168 dBdc). In-house IMD measurement capability gives Amphenol Connex the unique ability to understand the effects of connector design elements on IMD generation and to design the best performing connectors in the industry. Self-flaring designs are easily attached with standard hand tools in the field, and are highly resistant to pull off and twist off. All corrugated cable connectors are optimally matched to their cables for low VSWR and insertion loss.

Product Links

Features & Benefits

  • Accommodates a wide range of medium to miniature-sized RG coaxial cables in a rugged medium-sized design
  • Broad line of Military (M39012), Industrial (UG) and Commercial (RFX) grade products available, giving customers choices in weighing cost versus performance benefits
  • Meets many customer application demands with plug styles available in straight and right angle and jack styles available in panel mount, bulkhead mount, and receptacle


  • Antennas
  • Cable Assemblies
  • Instrumentation
  • PCS
  • Satcom
  • Base Stations
  • Cellular
  • Microwave Radio
  • Radar
  • Surge Protection
  • Broadcast
  • Components
  • Mil-Aero
  • Radios
  • WLAN

N-Type Standard Specifications

Impedance 50 Ω
Frequency Range 0 - 11 GHz
Voltage Rating 1,500 volts peak
VSWR MIL-C-39012 straight connectors: 1.3 max 0-11 GHz
MIL-C-39012 right angle connectors: 1.35 max 0-11 GHz
Dielectric Withstanding Voltage 2,500 volts rms
Insulation Resistance 5,000 MΩ minimum
Center Contact Resistance 1.0 mΩ
Outer Contact Resistance 0.2 mΩ
RF Leakage -90 dB minimum at 3 GHz
Insertion Loss .15 dB maximum at 10 GHz

Mating 5/8-24 threaded coupling
Braid or Jacket Cable Affixment All crimps: hex braid crimp
Clamps: screw-thread nut and braid clamp
Center Conductor Cable Affixment Crimp: crimp or solder
All others: solder only
Captivated Contact All crimps unless specified otherwise
Cable Retention Crimps: 60-120 lbs
Clamps: 30-70 lbs

Male Contacts Brass, silver or gold plated
Female Contacts Phosphorous bronze or beryllium copper, silver or gold plated
Other Metal Parts Brass with ASTROplate® finish; M39012 has silver finish
Insulators TFE, copolymer of styrene or glass-TFE (hermetic seal)
Weatherproof Gaskets Silicone rubber of synthetic rubber
Crimp Ferrule Copper

Temperature Range TFE: -65°C to +165°C
Weatherproof All series N with gaskets are weatherproof
Hermetic Seals Pass helium leak test of 2x10-8 cc/sec
Pressurized Shock Compression seal MIL-STD-202, method 213
Vibration MIL-STD-202, method 204, test condition B
Moisture Resistance MIL-STD-202, method 106
Corrosion MIL-STD-202, method 101, test condition B
Temperature Cycling MIL-STD-202, method 102, test condition C
Altitude MIL-STD-202, method 105, test condition C
Where applicable

Note: These characteristics are typical but may not apply to all connectors.

Corrugated N-Type Specifications

Impedance 50 Ω
Frequency Range 11.0 GHz
Return Loss 33 dB (1-2 GHz)
28 dB (2-3 GHz)
Operating Voltage Maximum 707 rms
Dielectric Withstanding Voltage 2,000 vdc
Insulation Resistance 5,000 MΩ minimum
Insertion Loss .05 frequency GHz
Shielding Effectiveness Minimum 125 dB
Peak Power Maximum 10 kW
Average Power Maximum .60 kW
3rd Order IM Product Typical -125 dBm (-168 dBc)

Mating MIL-STD-348
Inner Attachment Method Solder or captivated
Outer Attachment Method Compression
Assembly Torque 18/22 lb-ft (25/30 N-m)
Coupling Torque 15.00 lb-in (1.70 N-m)
Coupling Nut Retention Force 100.00 lbs (444.80 N)
Connector Durability 500 cycles, 12 cycles/minute

Body Brass, silver plated
Outer Contacts Brass, silver plated
Inner Contacts Beryllium copper, gold plated
Other Metal Parts Brass, silver plated
Insulators TFE
Gaskets Silicone rubber

Temperature Range Operating: -40°C to +150°C
Storage: -70°C to +100°C
Thermal Shock MIL-STD-202, method 107, test condition A-1
Immersion IEC 529, IP68
Vibration MIL-STD-202, method 204, test condition B
Corrosion MIL-STD-202, method 101, test condition B
Mechanical Shock MIL-STD-202, method 213, test condition I

Note: These characteristics are typical but may not apply to all connectors.