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SMB Series |
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SMB subminiature coaxial connectors are based on MIL-C-39012.
They are designed for 50 Ohm systems with a working frequency up to 4 GHz.
The snap-on mating design can offer not only a low mating force, but also a fast and reliable connection.
The major application of SMB series connectors are microwave, phone and other telecommunication 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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-
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2.06
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B
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0.18
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0.94
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C
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0.18
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-
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D
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2.97
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-
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E
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3.58
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-
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F
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3.58
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-
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G
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-
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1.63
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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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2.08
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-
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B
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-
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0.18
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C
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-
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0.18
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D
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-
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2.97
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E
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1.32
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-
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F
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-
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3.71
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G
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0.48
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0.53
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H
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0.00
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-
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I
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3.33
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3.58
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J
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1.65
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-
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Material
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Body
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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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Electrical
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Impedance
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50 Ohm
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Frequency range
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0 ~ 4 GHz
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Working voltage
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RG178,196 = 250V rms @sea level max
RG174, 188, 316 = 335V rms @sea level max
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Insulation resistance
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1000 MOhm min
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Dielectric withstanding voltage
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RG178, 196 = 750V rms min
RG174, 188, 316 = 1000V rms min
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Contact resistance
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Center contact: 6.0 mOhm max
Outer contact: 1.0 mOhm max
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VSWR
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Straight connector:
RG178,196 = 1.30 + 0.04F (F in GHz)
RG174, 188, 316 = 1.25 + 0.04F (F in GHz)
Right angle connector:
RG178, 196 = 1.45 + 0.06F (F in GHz)
RG174, 188, 316 = 1.35 + 0.04F (F in GHz)
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Insertion loss
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Straight connector = 0.30dB max @1.5GHz
Right angle connector = 0.6dB max @1.5GHz
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Mechanical
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Engagement force
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14.0 lbs max
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Disengagement force
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2.0 ~ 14.0 lbs
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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, RG58 = 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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