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Basic Introduction to SSMB Connector

The SSMB connector is a miniature RF connector known for its excellent performance and reliability. It is widely used in high-frequency and high-speed data transmission applications. Designed and manufactured with careful consideration, the SSMB connector aims to meet strict requirements for connection reliability, electrical performance, and mechanical stability. In this article, we will conduct a detailed analysis of the SSMB connector, exploring its design principles, performance parameters, and application areas.

SSMB Connector Design Principles

Internal structure and connection

The internal structure of the SSMB connector:

  • Male Connector: includes a Center Pin. 
  • Female Connector: includes a Center Socket.
SSMB connector
SSMB connector

How SSMB connectors are connected:

  • Align male and female connectors. 
  • Insert the center pin into the center socket. 
  • Ensure that the connectors are securely connected by pushing or tightening the connectors.


Materials and protective measures

  • Materials:

Use high quality materials such as stainless steel, brass or nickel-plated brass. 

These materials are durable and corrosion resistant.

  • Protection:

Use insulating materials, such as polytetrafluoroethylene (PTFE) , to prevent signal interference and maintain electrical integrity. 

Provide metal housing or coating for connectors to enhance their resistance to moisture, dust and other pollutants.

SSMB connector dimension diagram
SSMB connector dimension diagram

Size and appearance characteristics

SSMB connector dimensions: 

  • Compact size: SSMB connectors are relatively small and compact. 
  • Diameter: the diameter of the connector is usually between 2-3 mm.
  • Height: the height of the connector is usually between 8-10 mm.


Appearance characteristics of SSMB connectors: 

  • Metal housing: connectors usually have a metal housing, such as stainless steel or nickel-plated brass. 
  • Threaded interface: the connector has a threaded interface that allows it to be securely attached to the device. 
  • Color identification: connectors usually have different color identification to help distinguish between different connector types or functions.

Key Features of SSMB Connector

  • High frequency performance: Support High Frequency Range to ensure stable signal transmission. 
  • Miniaturization design: suitable for space-limited application scenarios.
  • Durability and reliability: the use of durable materials, after rigorous testing, to ensure long life and reliability. 
  • Quick Connection and disconnection: threaded interface designed for quick installation and maintenance.
  • Adaptability and compatibility: compatible with SMB connectors and can be upgraded or replaced with existing systems.

Performance Parameters for SSMB connector

  • Frequency Range: usually supports DC to 3 GHz high frequency range. 
  • Insertion loss: with low insertion loss to ensure the stability of signal transmission.
  • Reflection attenuation: provides high reflection attenuation to reduce signal reflection and interference.
  • Isolation: with good isolation, to prevent interference between signals.
  • Impedance: common impedance options include 50 ohms and 75 ohms.
  • Voltage withstand: usually with high voltage withstand capacity to ensure electrical safety.
  • Durability: after rigorous testing, with durability and long life.


Application Area of SSMB Connector

  • Wireless Communication: SSMB connectors are commonly used in wireless communication equipment, such as wireless base stations, antenna systems, wireless routers and radio equipment.
  • Radio and television: SSMB connectors are widely used in the radio and television industry to connect antennas, tuners, transmitters and receivers.
  • Test and measurement: SSMB connectors can be used in test and measurement equipment, such as Spectrum Analyzer, signal generator and Network analyzer, for high frequency signal testing and analysis.
  • Military and aerospace: due to its high frequency performance and reliability, SSMB connectors are widely used in the military and aerospace fields for radar systems, communications equipment and navigation systems
  • Medical Equipment: SSMB connectors are also used in medical equipment, such as medical monitoring equipment, medical imaging equipment and surgical equipment, to meet the requirements of high-frequency signal transmission.

Advantages & Challenges


  • Small design, suitable for space-limited application scenarios. 
  • High frequency performance, support stable signal transmission. 
  • Durability and reliability, subject to rigorous testing and long life.
  • Quick connection and disconnection for easy installation and maintenance. 
  • Compatibility, which can be upgraded or replaced with existing systems.



  • power limits, not applicable to high power applications. 
  • easy to damage, need to be handled carefully to avoid damage. 
  • possible higher costs, especially in certain areas of special application.



What is an SSMB connector?

An SSMB connector is a high-frequency RF connector used for connecting and transmitting high-frequency signals, commonly used in wireless communication and other high-frequency applications.


What is the difference between SSMB and SMB connectors?

SSMB connectors are a variant of SMB connectors, with slightly different size and performance. SSMB connectors are smaller, suitable for space-limited applications, and offer higher frequency range and better performance.


What frequency range is suitable for SSMB connectors?

Typically, SSMB connectors are suitable for high-frequency range from DC to 3 GHz.


What is the insertion loss of SSMB connectors?

SSMB connectors generally have low insertion loss to ensure stable signal transmission. The specific value may vary depending on the manufacturer and model.


What is the impedance of SSMB connectors?

Common options for SSMB connectors include 50 ohms and 75 ohms impedance, depending on the application requirements and design specifications.


How to install and remove SSMB connectors?

SSMB connectors usually have threaded interface design. To install, rotate the connector clockwise for tightening, and to remove, rotate the connector counterclockwise to release the connection.


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