RP-SMA Connectors

RP-SMA Connectors

Utilizing a threaded interface, SMA 50 ohm connectors are semi-precision units that provide excellent electrical performance from DC to 34 GHz and outstanding mechanical durability.

SMA connectors feature stainless steel or brass construction and a ¼ - 36 threaded coupling, which offers high performance in a compact design.

For phase array radar, test equipment, ILS landing systems and other instrumentation using phase matching techniques, SMA interconnects offer a precise and simple means of phase adjustment for microwave devices. Built in accordance with MIL-C-39012 and CECC 22110/111, SMA connectors can be mated with all connectors that meet these specification mating diameters regardless of manufacturer.

Features and Benefits
  • Light weight, compact and vibration proof design
  • High-strength designs for harsh environments
  • Available in brass and stainless steel with gold, nickel and passivated plating
  • Terminates to all standard flexible coaxial cables, low-loss (LMR) type cables and industry standard semi-rigid and conformable cables
  • Base Stations
  • Antennas
  • Telecommunications
  • Instrumentation
  • PC/LAN

SMA Connectors Specifications


Impedance 50 Ohm
Frequency Range DC - 18 GHz (Up to 34 GHz on Extended Range Designs)
Voltage Rating 335 Volts RMS Continuous
Dielectric Withstanding Voltage 1000 VRMS Min
VSWR  (Return Loss)  
     M39012 Straight Connectors  
     .141" OD Copper Jacket Cable 1.05 + .005 f (GHz)
     RG-58/RG-142 Group 1.15 + .011 f (GHz) DC-12.4 GHz
     RG-174/RG-316 Group 1.15 + .02 f (GHz) DC-12.4 GHz
     RG-178 Group 1.20 + .025 f (GHz) DC-12.4 GHz
     M39012 Angle Connectors  
     .141" OD Copper Jacket Cable 1.10 + .01 f (GHz)
     RG-58/RG-142 Group 1.15 + .02 f (GHz) DC-12.4 GHz
     RG-174/RG-316 Group 1.15 + .03 f (GHz) DC-12.4 GHz
     RG-178 Group 1.20 + .03 f (GHz) DC-12.4 GHz
Insulation Resistance  5000 MΩ Min
Center Contact Resistance 3.0 mΩ Max
Outer Contact Resistance 2.0 mΩ Max
RF Leakage -60 dB Max (DC - 3 GHz)
Insertion Loss .06 √(f(GHz)) dB Max
Power Handling 75 W @ 10 GHz @ 25ºC


Temperature Range  
     Typical -65°C to +165°C  
     Styrene Insulator or Phosphor Bronze Contact -40°C to +85°C  
Thermal Shock MIL-STD-202, Method 107 (Test Condition B) except high temp test @ +200°C
Corrosion MIL-STD-202, Method 101 (Test Condition B) - 5% Salt Solution
Vibration MIL-STD-202, Method 204 (Test Condition D)
Mechanical Shock MIL-STD-202, Method 213 (Test Condition I) - No Discontinuity Permitted
Moisture Resistance MIL-STD-202, Method 106
Altitude MIL-STD-202, Method 105 (Test Condition C)


Mating Cycles 500 Min
Coupling Mechanism Threaded
Interface Specification MIL-STD-348
Mating Torque (Stainless Steel Plug) 0.8 - 1.1 N-m (7 - 10 in-lbs)
Mating Torque (Brass Plug) 0.3 - 0.6 N-m (3 - 5 in-lbs)
Note: These characteristics are typical and may not apply to all connectors.
Connector configurations may affect performance.

Interface Dimensions