SMA Miniature Coaxial Connectors:

SMA is one kind of RF Coaxial Connector that is widely applied, with small-sized thread coupling, characteristic impedance is 50 Ohm, and it’s super miniature with excellent high frequency capabilities when used for telecommunications. It is most suitable in cases where space is limited and solid reliability is required. The characteristic of connectors is in wide frequency range, excellent performance, and high reliability. The are used in connection with RF cable or micro-strip line in RF circuit of the WLAN system, controlled program, microwave equipments and the digital communication system. The frequency can be up to 18GHz by using semi-rigid or flexible cable.

There are two types of cable connectors: crimp and clamp.

Characteristics Requirement Specification
ELECTRICAL DATA
Impedance 50 Ohm
Frequency Range Semi-Rigid Cable :DC to 18GHz
Flexible Cable :DC to 12.4GHz
Contact Current DC 2.0A max.
Working Voltage Semi-Rigid Cable :1000V
Flexible Cable :750V
Contact Resistance Center Contacts: 3.0m Ohm
Outer Contacts: 2.5m Ohm
Insulation Resistance 5000M Ohm min
Insertion Loss 0.05 radical sign f(GHz)dB
VSWR ≤ 1.15+0.02f(GHz)
RF Leakage -60dBm min.Between 2~3GHz
ENVIRONMENTAL DATA
Temperature Range -65degrees centigrade ~ +125degrees centigrade
MECHANICAL DATA
Coupling Nut Torque 12Ncm~170Ncm
Coupling Nut Retention Force ≥200N
Life 500 matings
Contact Captivation ≥27N
MATERIALS
Bodies Brass or stainiess steel
Female Contacts Berylium Copper
Insulators PTFE Teflon
Gasket Silicone Rubber
PLATINGS
Bodies Gold Plated or Passivated
Center Contacts Gold Plated


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