SMB connector

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SMB Connector.jpg
Custom SMB jack connector crimped to a 5mm coaxial cable.
Type RF coaxial connector
Designed 1960s
Manufacturer Various
Cable Coaxial
Passband Typically 0-4 GHz

SMB (SubMiniature version B) connectors are coaxial RF connectors developed in the 1960s. SMB connectors are smaller than SMA connectors.

They feature a snap-on coupling and are available in either 50 Ω or 75 Ω impedance. They offer excellent electrical performance from DC to 4 GHz.

An SMB jack has a male center pin, while an SMB plug has a female basket.

Connectors are available for two SMB cable sizes:

  1. Cable 2.6/50+75 S (3 mm outer / 1.7 mm inner diameter) and
  2. Cable 2/50 S (2.2 mm outer / 1 mm inner diameter)


The SSMB connector is a small version of the standard SMB connector with a 'snap-on' coupling.[1][2]

  1. Impedance: 50 Ohm
  2. Operating frequency: DC-12.4 GHz

See also[edit]


  1. ^ "SSMB (pdf)" (PDF). Retrieved 2011-01-12. 
  2. ^ "SSMB-Nano". 2007-07-24. Retrieved 2011-01-12. 
  • MIL-C-39012
  • MIL-STD-348
  • MIL-STD-202

External links[edit]