The TE Connectivity Greenpar 1-1337458-0 is a BNC T-shaped adapter that converts a single BNC plug (male pin) into two BNC jacks (female sockets). It is a same-series adapter — both ends are BNC, so it splits one signal path into two without changing connector family. The T-shape body is free-hanging (in-line mount), designed for panel-free cable routing where a straight barrel would not give you the branch.
RF performance and construction
Gold on the mating surfaces delivers the 500-cycle mating life — the contact resistance stays consistent through repeated reconnections in field-service or test-bench use. The bayonet lock on both ends gives a quarter-turn positive mate that holds under cable strain.
How it differs from a standard BNC barrel adapter
A standard BNC barrel adapter (plug to jack, straight) simply extends a cable run — signal in one end, out the other. The 1-1337458-0 T adapter takes a single BNC plug input and splits it to two BNC jacks, creating a signal branch point. Both paths carry the full 50 Ohm signal simultaneously. The T-shape body means it sits perpendicular to the cable axis rather than inline, so it needs clearance for the branch leg. If you only need a straight pass-through, a barrel adapter is the simpler fit; if you need to tap a signal to a second instrument or monitor, this T adapter is the part.