What are SMB Connectors?

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Editorial Team - everything RF

Mar 8, 2019

The SMB (Sub-Miniature version B) connector is a quick-lock mating miniature connector that operates up to 4 GHz in frequency. SMB connectors are smaller than SMA connectors, however, these connectors are not ideal for harsh environmental conditions, as they are not robust as SMA connectors.

Available in 50 Ohm and 75 Ohm configurations, the SMB connectors are built in accordance with MIL-C-39012, IEC 60169-10, and CECC 22130 interface standards.

Key Specifications of SMB Connectors:

  • Impedance: 50 Ohm, 75 Ohm
  • Frequency Range: DC to 4 GHz 
  • Coupling Mechanism: Snap-on Coupling
  • Interface Standards: CECC 22130, IEC 60169-10, MIL-STD-348B
  • Mating Durability: more than 500 mating cycles
  • Temperature Range: -65⁰C to +165⁰C