SMA connectors are semi-precision, subminiature devices that provide repeatable electrical performance from DC to 12.4 GHz with flexible cable. Semi-rigid cabling extends the frequency range of the device to 18 GHz. These devices offer broadband performance with low reflection and constant 50 ohm impedance. Impedance. These properties, along with minimum attenuation and low VSWR have made the SMA extremely popular in the microwave community.
The SMA design has been broadened to accommodate many interconnect requirements and is available in pressure crimp, clamp and solder terminal attachments. SMA design paramenters have incorporated the considerations of balancing cost , size , weight and performance to yield the best value in your microwave system. Among typical applications are components, such as dividers , mixers , amplifiers , trimmers and attenuators. SMA cinnectors are also used to provide interconnections from printed circuit board striplines to coaxial cable.
0 to 18.0 GHz • for RG-402 & RG-405 semi-rigid cable-0 to 18.0 GHz • for flexible cable→max operation frequency of cable per MIL-C-17 (12.4 GHz maz)
VSWR
RG178U→
1.2+0.025 f max (Straight) 1.2+0.03 f max (Right Angle)
RG316U→
1.15+0.02 f max (Straight) 1.15+0.03 f max (Right Angle)
RG142U→
1.15+0.01f max (Straight) 1.15+0.02 f max (Right Angle)
RG402→
1.05+0.01 f GHz max (Straight) 1.1+0.01 f GHz max (Right Angle)
RG405→
1.07+0.01 f GHz max (Straight) 1.1+0.01 f GHz max (Right Angle)
Working Voltage
• RG-402(.141"OD.)→500 volts rms max • RG-405(.085:OD.)→335 volts rms max • RG-58,141,142,223→500 volts rms max • RG-174,188,316→335 volts rms max • RG-178,196→250 volts rms max
Dielectric Withstanding Voltage
• RG-402(.141"OD.)→1,000 volts rms max • RG-405(.085:OD.)→750 volts rms max • RG-58,141,142,223→1,000 volts rms max • RG-174,188,316→750 volts rms max • RG-178,196→500 volts rms max
Contact Resistance
center contact=3.0 Milliohms max outer contact=2.0 Milliohms max
Insertion Loss
0.06 dB max × GHz @ 6 GHz
Insulation Resistance
5,000 Megohms min
Mechanical & Environmental :
Mating
1/4"-36 Threaded Coupling
Durability
500 matings
Coupling Nut Retention
60 lbs Min
Recommend Nut Mating Torque
Stainless Steel: 7 to 10 inch-pounds
Brass: 3 to 5 inch-pounds
Cable Retention
RG-58,141,142,223→40 lbs min RG-174,188,316 →15 lbs min
Temperature Range
-65°C to 165°C
Vibration
MIL-STD-202 Method 204 Test Cond. D.
Salt Spray
MIL-STD-202 Method 101 Test Cond. B.
Thermal shock
MIL-STD-202 Method 107 Test Cond. B.
Meaterial :
Material
Plating
Connector Body
Stainless steel Brass
Passivated or gold Nickel or gold
Center Contact
Male:Brass Female:Beryllium Copper
50 µ " gold over 50 µ " nickel 50 µ " gold over 50 µ " nickel