75 Ohm SMB Mini Plug for RG-59 Plenum Runs
It's a snap-on, free-hanging (in-line) connector with a female socket center contact. The 75 Ohm impedance and RG-59 cable group target it for video surveillance, broadband, and in-building distribution where plenum-rated cable is required by code.
What the 75 Ohm Rating and Cable Match Mean
75 Ohm is the standard impedance for composite video, CCTV, and broadband RF — not the 50 Ohm used in cellular or Wi-Fi. The 142335-75 is explicitly listed for RG-59 plenum cable, 20 AWG center conductor. The plenum rating means the jacket material meets fire code for air-handling spaces (above drop ceilings, in ventilation ducts).
Kit Contents and Termination
The package includes three pieces: the SMB plug body, one center contact, and one ferrule. The snap-on fastening is standard for SMB — push to mate, pull to unmate — rated for 500 cycles. The gold plating on both the body and center contact supports that cycle life without corrosion in indoor or conditioned environments.
Insertion Loss and Signal Path
Insertion loss is listed at 0.3 dB. For a 75 Ohm video path, that's a clean number — it won't visibly degrade a composite or HD-SDI signal over a short cable run. The single-port, plug configuration mates with any standard SMB jack (bulkhead or PCB-mount) of the same impedance. The snap-on coupling gives a quick connect/disconnect for field-service or test points where you don't want to unscrew a threaded connector.