The TE Connectivity Greenpar 5-1634532-1 is a BNC T-adapter that converts a single BNC plug (male pin) into two BNC jacks (female sockets), all within the same 50 Ohm impedance path. The T-Shape body in nickel-plated zinc alloy gives you a compact three-port splitter for routing one RF signal to two destinations — common in test equipment, video distribution, and instrumentation racks where you need to daisy-chain or monitor a signal without an external splitter. Both ends use the bayonet lock coupling, so the adapter mates and unmates quickly with standard BNC connectors. The center contacts are gold-plated brass and phosphor bronze, which keeps contact resistance stable across repeated connect-disconnect cycles in field-service or lab use.
That means the factory has stopped production and there is no scheduled last-time-buy window. No official replacement part number has been published by TE for this adapter, so a direct cross-reference from the manufacturer is not available. If you are maintaining a legacy system, confirm the exact configuration (BNC plug to dual BNC jack, 50 Ohm, T-Shape) before committing to a substitute.
The 5-1634532-1 sits in TE's Greenpar series of BNC adapters. The defining feature here is the T-Shape — one male BNC splits to two female BNCs in a single die-cast body. This is different from a straight BNC barrel (plug to jack, inline) or a right-angle adapter. If your application needs to tee off a signal line to two instruments or to loop through a monitor point, this form factor saves a separate BNC T-connector plus an extra barrel. The 50 Ohm impedance is standard for RF test and telecom; if your system runs 75 Ohm (video/CCTV), this adapter will create a mismatch and increase return loss.