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The SMA Series is a sub-miniature providing excellent electrical performance for microwave applications up to 18 GHz. They us a threaded interface and are constructed of high quality brass ensuring durability and mechanical strength. The main features are high mechanical strength, high durability and low VSWR.
Applications
Base Stations Instrumentation Process Controls
Telecommunication Wireless LAN PC/LAN
Microwave components Cable Assemblies Mil/Aero
Interface Mating Dimensions:


Interface Dimension in Millimeters
Male Female
mm mm
  Min. Max.   Min. Max.
A 1.24 1.30 A 1.24 1.30
B   4.18 B   4.18
C 4.53 4.59 C 4.6 4.67
D 1.91 2.54 D 1.88 1.98
E 0.90 0.94 E 5.28 5.49
F 1/4-36UNS-2A F 1/4-36UNS-2A
G 2.54 3.43 G 4.32  
H .315 HEX H 0.05 0.20
      I 0.05 0.25
Technical Characteristics
Electrical
Impedance 50 ohm
Frequency Range 0 - 18 GHz
Working Voltage RG-178, 196: 250 VRMS max.
RG-174, 188, 316, .085": 335 VRMS max.
RG-58, 141, 142, 223, .141": 500 VRMS max.
Dielectric Withstanding Voltage RG-178, 196: 500 VRMS
RG-174, 188, 316, .085": 750 VRMS
RG-58, 141, 142, 223, .141": 1000 VRMS
VSWR Straight 1.20 max.
Right Angle 1.25 max.
Contact Resistance Center Contact 5 Milliohm Max.
Outer Contact 1 Milliohm Max.
Insulator Resistance 5000 Mega ohms min.
Material
Part Name Material Finish
Body, Metal Parts Brass, Stainless Steel Gold, Nickel or Passivated
Center Contacts Plug: Brass Gold
  Jack: Beryllium Copper, Phosphor Bronze Gold
Insulator PTFE  
Crimp Ferrule Annealed Copper Gold or Nickel
Clamp Gaskets Silicone Rubber  
Mechanical & Environmental
Engagement Force 2 in-lbs. max
Disengagement Force 2 in-lbs max.
Coupling Nut Retention 60 lbs. min.
Coupling Proof Torque 15 in-lbs. min.
Contact Retention 6 lbs. min.
Durability (Mating) 500 cycles min. (For Be/Cu Jack Contact only)
Temperature Range -65°C ~ 165°C
Vibration MIL-STD-202 Meth. 204/D
Salt Spray MIL-STD-202 Meth. 101/B
Thermal Shock MIL-STD-202 Meth. 102/C