SMB (''SubMiniature version B'') connectors are coaxial
RF connector
A coaxial RF connector (radio frequency connector) is an electrical connector designed to work at radio frequencies in the multi-megahertz range.
RF connectors are typically used with coaxial cables and are designed to maintain the shielding t ...
s developed in the 1960s. SMB connectors are smaller than
SMA connector
SMA (''SubMiniature version A'') connectors are semi-precision coaxial RF connectors developed in the 1960s as a minimal connector interface for coaxial cable with a screw-type coupling mechanism. The connector has a 50 Ω impedance. SMA ...
s.
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:
# Cable 2.6/50+75 S (3 mm outer / 1.7 mm inner diameter) and
# Cable 2/50 S (2.2 mm outer / 1 mm inner diameter)
SSMB
The SSMB connector is a small version of the standard SMB connector with a 'snap-on' coupling.
# Impedance: 50 Ohm
# Operating frequency: DC–12.4 GHz
See also
*
SMA connector
SMA (''SubMiniature version A'') connectors are semi-precision coaxial RF connectors developed in the 1960s as a minimal connector interface for coaxial cable with a screw-type coupling mechanism. The connector has a 50 Ω impedance. SMA ...
,
SMC connector
SMC (''SubMiniature version C'') connectors are coaxial RF connectors developed in the 1960s. The interface specifications for the SMC and many other connectors are referenced in MIL-STD-348. They use a #10-32 UNF threaded interface (screw type ...
*
BNC connector
The BNC connector (initialism of "Bayonet Neill–Concelman") is a miniature quick connect/disconnect radio frequency connector used for coaxial cable. It is designed to maintain the same characteristic impedance of the cable, with 50 ohm and ...
,
TNC connector
The TNC connector (acronym of "Threaded Neill–Concelman") is a threaded version of the BNC connector.
Description
The interface specifications for the TNC and many other connectors are referenced in MIL-STD-348. The connector has a 50 Ω impe ...
,
N connector
The N connector (also, type-N connector) is a threaded, weatherproof, medium-size RF connector used to join coaxial cables. It was one of the first connectors capable of carrying microwave-frequency signals, and was invented in the 1940s by Pau ...
References
Sources
* MIL-C-39012
* MIL-STD-348
* MIL-STD-202
External links
Image of SMB and Mini SMB 75 Ω plugs
RF connectors
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