SMB connector

For SMB surface mount diode package, see DO-214.

SMB (SubMiniature version B) connectors are coaxial RF connectors developed in the 1960s. SMB connectors are smaller than SMA connectors.

SMB

Custom SMB jack connector crimped to a 5 mm coaxial cable
Type	RF coaxial connector
Production history
Designed	1960s
Manufacturer	Various
Cable	Coaxial
Passband	Typically 0–4 GHz

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.^[1][2]

Connectors are available for two SMB cable sizes:

1. Cable 2.6/50+75 S (3 mm outer / 1.7 mm inner diameter) and
2. Cable 2/50 S (2.2 mm outer / 1 mm inner diameter)

SSMB-Nano

The SSMB-Nano connector is a small version of the standard SMB connector with a 'snap-on' coupling.^[3][4]

1. Impedance: 50 Ohm
2. Operating frequency: DC–12.4 GHz

See also

• SMA connector, SMC connector
• BNC connector, TNC connector, N connector