RF Coaxial Connectors | SSMB (GJB681A / MIL-C-39012)

SSMB Series RF Coaxial Connector

The SSMB series is a sub-miniature push-on RF coaxial connector that retains the snap-on convenience of SMB while reducing overall size, making it suitable for dense RF modules and compact instruments. It operates at 50 Ω with gold-plated contacts in brass or stainless-steel bodies and PTFE insulation, and is built to GJB681A (MIL-C-39012). Cable-clamp, bulkhead and PCB versions are available, including the KWB2A straight cable connector.

Key Specifications

Impedance 50 Ohm

Coupling Push-On

Type Sub-Miniature

Executive Standard	GJB681A (MIL-C-39012)
Impedance	50 Ω
Coupling	Push-on (snap-on)
Series Variant	SSMB-KWB2A straight cable connector
Inner Contact	Pin: phosphor bronze, gold plated / Socket: beryllium copper, gold plated
Body Material	Brass, gold or nickel plated; stainless steel, passivated or gold plated
Insulator	PTFE
Contact Resistance	Inner ≤ 6.0 mΩ; outer ≤ 1.0 mΩ
Insulation Resistance	≥ 1000 MΩ
Dielectric Withstanding Voltage	750 V
VSWR	≤ 1.3
Mechanical Endurance	500 mating cycles