SMA
Coaxial
Connectors
25
SMA Coaxial Connectors
Electrical Specifications
The Amphenol SMA connectors are semi-precision, sub-miniature, high-frequency connectors
which offer reliable broadband performance DC to 18GHz with low reflection and constant 50 ohm
impedance.
The main features are high mechanical strength, high durability and low VSWR. Matured design
principles, careful manufacturing at all stages and thorough quality assurance organization are
the bases for the well-known quality of Amphenol SMA connectors.
Impedance
Frequency range
Voltage rating
Dielectric withstanding voltage
VSWR-straight Connectors *f in GHz
Contact resistance
Insulation resistance
RF leakage
Insertion loss
50 ohm
*semi-rigid cable for .141" or .085" O.D. copper jacket: 0-18 GHz
*Flexible cable: 0-12.4 GHz
*RG-58, 141, 142, 233: 500v peak
*RG-174, 188, 316: 375V peak
*.141" & RG-58 cable group: 1000V RMS
*.085" & RG-316 cable group: 750V RMS
*.141" semi-rigid cable group: 1.05 + .005f
*RG-58 cable group: 1.15 + .01f
*RG-174 cable group: 1.15 + .02f
*RG-178 cable group: 1.20 + .025f
Center: 2.0 milliohms
Body: 2.0 milliohms
Braid tot body: 0.5 milliohms
5000 Megohms
-90 db min. At 2-3 GHz
db max. =.06 freq. GHz.. Test frequency @6.0 GHz
Material Specifications
Parts Name
Body, coupling nut, other metal parts
Contacts
Male
Female
Insulator
Gasket
Crimp ferrule
Selection Guide
Mil standard
Non-magnetic stainless steel per
QQ-S-764 #303
finish: passivated
Brass per QQ-B-626
Beryllium copper per QQ-C-530
heat treated per MIL-H-7199
Finish: .00005" min gold plated per
MIL-G-45204 type 1, Grade C.
PTFE
Silicone rubber
Seamless copper tubing alloy
*Suitable for direct mounting on
aluminium panels
*Lowest cost
Economic type
Brass per QQ-B-626
finish: nickel or gold per requirement
Brass per QQ-B-626
Beryllium copper per QQ-C-530
heat treated per MIL-H-7199
Finish: .00005" min gold plated per
MIL-G-45204 type 1, Grade C.
PTFE
Silicone rubber
Seamless copper tubing alloy
*For commercial applications only
*Lower cost
Military Specifications MIL-C-39012 & MIL-C-83517 SMA