SMB CONNECTOR SERIES

The SMB interface features a snap-on coupling mechanism and is available in 50 Ohm and 75 Ohm configurations. SMB connectors conform to the requirements of MIL-C-39012, and the interface is in compliance with MIL-STD-348. SMB connectors offer broadband performance with low reflection DC to 4 GHz and utilize die cast components on non-critical areas to provide a low-cost solution.

Related Products

SMB Adapters

 

Features and Benefits

  • Selective plating provides corrosion resistance finish as well as good solder-ability characteristics
  • Various plating options in nickel, gold, and tin lead
  • SMB PCB slide-on plug and jack allows board-to-board mounting with a low insertion force making this is ideal for mating a high number of connectors on a pair of PCB’s

Applications

  • Base Stations 
  • Antennas
  • Radio Boards
  • PC/LAN
  • GPS

SMB 50 Ohm Specifications

Electrical  
Impedance 50 Ohm
Frequency Range 0-4 GHz with low reflection; usable to 10.0 GHz
Voltage Rating for RG-188/U Cables  
Sea Level 335 Volts
70,000 ft 85 Volts
Dielectric Withstanding Voltage   
RG-196 type 750 VRMS
RG-188 type 1000 VRMS
VSWR for RG-196/U Series  
Straight Connectors 1.30 + .04 f (GHz)
RT Angle Connectors 1.45 + .06 f (GHz)
VSWR for RG-188 Series  
Straight Connectors 1.25 + .04 f (GHz)
RT Angle Connectors 1.35 + .04 f (GHz)
Insulation Resistance 1000 MΩ min
Contact Resistance  
  Center Conductor Intitial: 6.0 mΩ; After environmental: 8.0mΩ
  Outer Conductor Intitial: 1.0 mΩ; After environmental: 1.5mΩ
  Braid to Body Intitial: 1.0 mΩ; After environmental: N/A
RF Leakage  
2-3 GHz -55 dB min
Insertion Loss  
Straight Connectors, 1.5 GHz 0.30 dB
RT Angle Connectors, 1.5 GHz 0.60 dB
 
Environmental  
Temperature Range -65⁰C to +165⁰C
Thermal Shock MIL-STD-202 Method 107 (test cond. B) except high temp test @ +200⁰C
Corrosion MIL-STD-202 Method 101 (test cond. B) 5% salt solution
Vibration MIL-STD-202 Method 204, snap on (test cond. B) (15G's)
Shock MIL-STD-202 Method 213, snap on (test cond. B) 75 G's @ 6 milliseconds 1/2 sine
 
Mechanical  
Engagement Force Initial 14 lbs. max. After 500 matings, 14 lbs max
Disengagement Force 2 lbs min. After 500 matings, 14 lbs max
Contact Captivation All types, except as noted
Connector Durability 500 mating and unmating cycles min
Cable Retention Equal to breaking strength of cable employed
Connector Affixment  
Braid/Jacket Hex crimp
Center Contact Solder
Mating 50 Ohm snap-on coupling, per MIL-STD-348
 

SMB 75 Ohm Specifications

Electrical  
Impedance 75 Ohm
Frequency Range 0-4 GHz with low reflection; usable to 10.0 GHz
Voltage Rating for RG-188/U Cables  
Sea Level 335 Volts
70,000 ft 85 Volts
Dielectric Withstanding Voltage  1000 VRMS
VSWR for RG-196/U Series  
Straight Connectors 1.30 + .04 f (GHz)
RT Angle Connectors 1.45 + .06 f (GHz)
VSWR for RG-188 Series  
Straight Connectors 1.25 + .04 f (GHz)
RT Angle Connectors 1.35 + .04 f (GHz)
Insulation Resistance 1000 MΩ min
Contact Resistance  
  Center Conductor Intitial: 6.0 mΩ; After environmental: 8.0mΩ
  Outer Conductor Intitial: 1.0 mΩ; After environmental: 1.5mΩ
  Braid to Body Intitial: 1.0 mΩ; After environmental: N/A
RF Leakage  
2-3 GHz -55 dB min
Insertion Loss  
Straight Connectors, 1.5 GHz 0.30 dB
RT Angle Connectors, 1.5 GHz 0.60 dB
RF High Potential Withstanding Voltage, RF-195/U Series 500 VRMS
Corona Level, RG-195/U Series, 70000 ft 400 V min
 
Environmental  
Temperature Range -65⁰C to +165⁰C
Thermal Shock MIL-STD-202 Method 107 (test cond. B) except high temp test @ +200⁰C
Corrosion MIL-STD-202 Method 101 (test cond. B) 5% salt solution
Vibration MIL-STD-202 Method 204, snap on (test cond. B) (15G's)
Shock MIL-STD-202 Method 213, snap on (test cond. B) 75 G's @ 6 milliseconds 1/2 sine
 
Mechanical  
Contact Captivation All types, except as noted
Connector Durability 500 mating and unmating cycles min
Cable Retention Equal to breaking strength of cable employed
Connector Affixment (Braid/Jacket) Hex crimp
Connector Affixment to Center Contact Solder
Mating Snap on coupling per MIL-STD-348

Interface Dimensions