BJ27

TROMPETER  BJ27  射频/同轴连接器, 三轴, 直型隔板安装插座, 焊接, 50 ohm, 铍铜

The is a straight front-mount Bulkhead BNC Triaxial connector with solder termination. The Triaxial connector is made of nickel-plated brass.

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50R Impedance

Newark:
# TROMPETER  BJ27  RF / Coaxial Connector, Insulated, Front Mount, BNC Coaxial, Straight Bulkhead Jack, Solder, 50 ohm