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SMA Connectors
SMA

Features & Benefits
  • Broadband performance DC to 18 GHz with low reflection stainless steel construction and ¼ - 36 threaded coupling offers high performance in a compact design.
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  • Low cost Commercial Grade (Brass SMA) available in nickel or gold plating which provides approximately 30% cost reduction with 250 mating cycles.
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  • Available for .085" and .141" diameter semi-rigid cables and all the standard flexible cables including double shielded RG-316.
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  • Phase Adjustable SMA connectors provide ease of mechanical screw adjustments, compared to the delays and expense of laborious cable-trimming.
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    Applications
  • Antennas
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  • Telecom
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  • Base Stations
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  • Cable Assemblies
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  • Mil-Aero
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  • Components
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  • Instrumentation
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  • Radar
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  • PC/LAN
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    50 Ω SMA Specifications
    Electrical
    Impedance 50 O nominal
    Frequency Range .141" & .085" semi-rigid cable: 0-18 GHz
    Flexible cables: 0-12.4 GHz
    Voltage Rating RG-58, 141, 142: 500 volts peak
    RG-174, 188, 316: 375 volts peak
    Dielectric Withstanding Voltage .141" & RG-58 Cables: 1,000 VRMS
    .085" & RG-316 Cables: 750 VRMS
    VSWR

    Straight connector, .141": 1.05 + .005 f (GHz)
    Straight connector, .RG-174: 1.15 + .02 f (GHz)
    Straight connector, RG-58: 1.15 + .01 f (GHz)
    Straight connector, RG-178: 1.20 + .025 f (GHz)
    Contact Resistance Center contact: 2.0 mΩ
    Body: 2.0 mΩ
    Braid to body: 0.5 mΩ
    Insulation Resistance 5,000 mΩ
    RF Leakage -90 dB minimum @ 2.3 GHz
    Insertion Loss dB maximum = .06v[f(GHz)]
    Test frequency @ 6.0 GHZ
    Mechanical
    Mating .250-36 threaded coupling
    Mating Torque Minimum: 2 inch pounds (12 N.cm)
    Recommended: 7-10 inch pounds (80-110 N.cm)
    Maximum: 15 inch pounds (170 N.cm)
    Connector Durability 100 matings
    Material
    Bodies, Coupling Nuts, Other Metal Parts (except as noted) Brass per QQ-B-626
    Contacts Male: Brass
    Female: Beryllium copper, heat treated
    Center Contact Plating .000030" minimum gold
    Plating (Other Metal Parts) Standard .000010" gold or nickel plated
    Insulator TFE fluorocarbon
    Male Center Contacts Crimps: 20 - 100 lbsClamps: 20 - 50 lbs
    Female Center Contact Beryllium copper or phosphorous bronze, silver or gold plated
    Other Metal Parts Brass with nickel finish (except for M39012 which are silver)
    Insulators TFE fluorocarbon
    Gaskets Silicone rubber
    Crimp Ferrule Seamless copper tubing alloy
    Environmental
    Temperature Range -65°C to +165°C
    Weatherproof Crimp type: heat shrink tubing
    Solder type: silicone rubber gaskets
    Thermal Shock MIL-STD-202 method 107 (test condition B) except high temperatures @ + 200°C
    Shock MIL-STD-202 method 213 (test condition I). No discontinuity permitted.
    Vibration MIL-STD-202 method 204 (test condition D)
    Corrosion MIL-STD-202 method 101 (test condition B) 5% salt solution
    Temperature Cycling MIL-STD-202, method 102, test condition D
    Altitude MIL-STD-202 method 105 (test condition C), no corona at 70,000 feet.
    .141" & RG-55: 250 VRMS
    .085" & RG-122: 190 VRMS
    Military
    MIL-C-39012 & MIL-C-83517 SMA Specification Sheets Where applicable

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