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.

產品說明

ELECTRICAL:

Electrical Data	Detail
Impedance	50 ohms
Frequency range	0 to 4GHz
Working Voltage	RG178=250Vrms at sea level max. RG174,316=335 Vrms at sea level max.
Dielectric withstanding voltage	RG178=750 Volts rms min. RG174,316=1000 Volts rms min.
VSWR	Straight connector : RG178=1.30+0.04F(F in GHz) RG174,316=1.25+0.04F(F in GHz) R/A connector: RG178=1.45+0.06F(F in GHz) RG174,316=1.35+0.04F(F in GHz)

MECHANICAL:

Mechanical Data	Detail
Engagement force	14.0 pounds max.
Disengagement force	2 lbs~14.0 lbs
Connector durablity	500 matings
Cable retention force	RG178=7.3 lbs min. RG174=9.7 lbs min. RG316=12.1 lbs min.

合金細線

連接器

Contact probe pin

合金細線

連接器

Contact probe pin

合金細線

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