SMB connector explained

SMB
Type:	RF coaxial connector
Design Date:	1960s
Manufacturer:	Various
Cable:	Coaxial
Passband:	Typically 0–4 GHz

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

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

Sources

• MIL-C-39012
• MIL-STD-348
• MIL-STD-202

External links

• Image of SMB and Mini SMB 75 Ω plugs

Notes and References

1. https://web.archive.org/web/20160923121155/http://www.l-com.com/customer-service?ID=4873 Answer to a question about SMB connector genders
2. https://web.archive.org/web/20190826104220/http://www.coaxplanet.com/Portals/2/SMB%20Jack%20and%20Plug%20with%20ID.jpg Image of SMB 50 Ω plug and jack illustrating the differences between the two genders
3. Web site: SSMB-Nano . 2011-01-12 . dead . https://web.archive.org/web/20110124205150/http://www.imscs.com/uploads/media/SSMB.pdf . 2011-01-24 .
4. Web site: 2007-07-24 . SSMB-Nano . https://web.archive.org/web/20130419052403/http://www.imscs.com:80/128.html . 2013-04-19 . 2011-01-12 . Imscs.com.