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SMA Series |
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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.
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Plug interface
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Jack interface
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Item
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Plug interface dimensions in mm
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min
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max
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A
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0.00
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0.25
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B
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0.00
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0.25
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C
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-
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0.30
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D
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0.90
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0.94
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E
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0.38
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1.14
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F
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-
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2.54
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G
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3.30
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-
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H
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-
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3.43
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I
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-
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4.59
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J
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6.35
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-
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Item
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Jack interface dimensions in mm
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min
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max
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A
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0.00
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0.25
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B
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0.00
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0.25
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C
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0.38
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1.14
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D
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1.24
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1.29
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E
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1.88
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1.98
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F
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2.67
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-
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G
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4.32
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-
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H
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4.60
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-
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I
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5.28
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5.49
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J
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5.54
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-
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Material
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Body, coupling nut
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Brass, gold or nickel plated
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Center contact
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Brass (male)/BeCu (female), gold plated
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Insulator
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Teflon
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Crimp ferrule
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Annealed copper, gold or nickel plated
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Gasket
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Silicone rubber
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Electrical
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Impedance
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50 Ohm
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Frequency range
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0 ~ 12.4 GHz
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Working voltage
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RG178 = 170V rms, RG58 = 335V rms, RG174, 188, 316 = 250V rms max @sea level
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Insulator resistance
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5000 MOhm min
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Dielectric withstanding voltage
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RG178 = 500V rms, RG58 = 1000V rms, RG174, 188, 316 = 750V rms min
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Contact resistance
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Center contact: 3.0 mOhm max
Outer contact: 2.0 mOhm max
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VSWR
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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)
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Insertion loss
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Straight connector = 0.06 x (f) GHz. Test frequency @6 GHz
Right angled connector = 0.15 x (f) GHz. Test frequency @6 GHz
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Mechanical
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Force to engage
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The torque required to engage and disengage shall not to exceed 2 in/lbs
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Coupling nut retention force
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60 lbs min (for plugs only)
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Coupling proof torque
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15 in/lbs min
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Connector durability
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500 matings
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Cable retention force
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RG178 = 7.3 lbs min, RG316 = 12.1 lbs min, RG 58 = 28.7 lbs.min
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Environmental
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Corrosion (Sail spray)
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MIL-SID-202F, Method 101D, Condition B
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Thermal shock
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MIL-STD-202F, Method 1017G, Condition A
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Vibration
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MIL-STD-202F, Method 204D, Condition B
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Mechanical shock
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MIL-STD-202F, Method 213B, Condition A
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Alpha Center
351 Irving Drive, Oxnard, CA 93030, USA
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“©2021 Alpha Products, Inc. All rights reserved.
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