What are BMA Connectors?

2 Answers
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- everything RF

Oct 16, 2019

BMA Connectors or Blind-Mate Connectors are slide-on/push-on RF connectors that can operate up to 22 GHz. A connection using these connectors can simply be made by pressing two BMA connectors together (Male & Female). They do not require wrenches or other tools to secure the connection. A type of spring mechanism is used to make the connection which also takes care of small misalignments when mating.

BMA connectors originated in the 1980's and are available in two variations - fixed or floating. The floating variation provides tolerance towards axial or radial misalignment making them ideal for high vibration applications. The spring mechanism separates the connector interface from the flange housing and allows floating for blind mating purposes. 

BMA connectors are suitable for high-frequency rack and panel applications including active electronically scanned array antennas, military microwave modules, radars, rack and panel telecommunication equipment.

Key Features:

  • Operating Frequency: Up to 22 GHz
  • Impedance: 50 Ohm
  • Coupling Mechanism: Slide-on/Push-on Coupling
  • Interface Standards: IEC 61169-33, MIL-STD-348B
  • Mating Cycles: Over 5000
  • Power rating at 1GHz: 450W
  • Temperature range: -65°C / +165°C

- RenhotecIC

Dec 23, 2020

BMA connector is a kind of push-in connector, also known as blind connector. The advantage of the BMA connector is that even if there is a slight misalignment, it can be easily matched by pressing the plug into the Jack with sufficient pressure, and then the internal mechanism can ensure a strong electrical connection and correct alignment.