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    SMB Connector

    Sometimes referred to as a sub-miniature connector, the SMB Connector is one member of the family of radio frequency (RF) connectors developed during the decade of the 1960’s. As is true of all RF connectors, the SMB connector is manufactured to work within a wide band of frequencies.

    What does the SMB Connector do?

    Designed to work with coaxial cables, the SMB connector acts as an interface between the cable and the electronic device. One of the main advantages of this type of connector is that it does not require a screw on connection. Instead, the SMB connector utilizes a snap-on coupling to connect to the cable. This makes the process of connecting the cable to another cable or directly into an electronic device that has the proper coupling quick and easy.

    Sizes Available with SMB Connectors

    The SMB connector is generally found with two different sizes, making it appropriate for use with a variety of devices. One example is the 2.6/50+75 S, which features a 3mm outer diameter coupled with a 1.7 mm inner diameter. The second option is a 2.0/50 S, which features an outer diameter of 2.2 mm and an inner diameter of 1 mm.

    How can an SMB Connector be Used?

    The SMB is roughly half the size of the SMA connectors that were developed along the same time. This makes it ideal for use with assembly connections within equipment housed in a relatively stable temperature and climate. Because the SMB connector is constructed for only moderate levels of vibration, the device is not recommended for any task that requires more than fifty to seventy-five ohms of impedance. An SMB connector that is manufactured with a fifty ohm impedance usually is specified up to 4GHz, while connectors manufactured for 75 ohm impedance are specified for only 2 GHz.

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