SMA Series

SMA connectors are based on MIL-C-39012 specifications and provide a constant 50 Ohm characteristic impedance up to 12.4 GHz.
The SMA product designs include a wide range of configurations and will consider each customer's special requirements.
The major application of SMA series connectors are test & measurement, mobile communication & other devices.

Plug interface

Jack interface

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Body, coupling nut Brass, gold or nickel plated
Center contact Brass (male)/BeCu (female), gold plated
Insulator Teflon
Crimp ferrule Annealed copper, gold or nickel plated
Gasket Silicone rubber
Impedance 50 Ohm
Frequency range 0 ~ 12.4 GHz
Working voltage RG178 = 170V rms, RG58 = 335V rms, RG174, 188, 316 = 250V rms max @sea level
Insulator resistance 5000 MOhm min
Dielectric withstanding voltage RG178 = 500V rms, RG58 = 1000V rms, RG174, 188, 316 = 750V rms min
Contact resistance Center contact: 3.0 mOhm max
Outer contact: 2.0 mOhm max
VSWR Straight connector:
RG178 = 1.20 + 0.025F (F in GHz)
RG174, 188, 316 = 1.15 + 0.02F (F in GHz)
RG58 = 1.15 + 0.01F (F in GHz)

Right angled connector:
RG178 = 1.20 + 0.03F (F in GHz)
RG174, 188, 316 = 1.15 + 0.03F (F in GHz)
RG58 = 1.15 + 0.02F (F in GHz)

Insertion loss Straight connector = 0.06 x (f) GHz. Test frequency @6 GHz
Right angled connector = 0.15 x (f) GHz. Test frequency @6 GHz
Force to engage The torque required to engage and disengage shall not to exceed 2 in/lbs
Coupling nut retention force 60 lbs min (for plugs only)
Coupling proof torque 15 in/lbs min
Connector durability 500 matings
Cable retention force RG178 = 7.3 lbs min, RG316 = 12.1 lbs min, RG 58 = 28.7 lbs.min
Corrosion (Sail spray) MIL-SID-202F, Method 101D, Condition B
Thermal shock MIL-STD-202F, Method 1017G, Condition A
Vibration MIL-STD-202F, Method 204D, Condition B
Mechanical shock MIL-STD-202F, Method 213B, Condition A

Alpha Center
351 Irving Drive, Oxnard, CA 93030, USA
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