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1-221128-0 — TE Connectivity AMP Connectors product photo
TE Connectivity AMP Connectors

TE Connectivity 1-221128-0 BNC Plug, 50 Ohm, 4 GHz, RG-58

MPN1-221128-0
Obsolete

TE Connectivity BNC plug, male pin, 50 Ohm, crimp termination for RG-58 cable, 4 GHz max, 500 mating cycles, nickel-plated zinc body, gold-plated brass centre contact, bulk.

$7.6900Ref. price · indicative, final on quote
1-221128-0 datasheet
StockContact for availability
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Specifications

1-221128-0 Technical Specifications
ParameterValue
Mounting typeFree Hanging (In-Line)
Connector typePlug, Male Pin
Fastening typeBayonet Lock
Voltage rating500 V
Frequency - max4 GHz
Cable groupRG-58, 58A, 58B, 58C
Operating temperature-55°C~85°C
Body materialZinc
Housing colorSilver
Dielectric materialPolyethylene (PE)
Center contact materialBrass
PackageBulk
Impedance50Ohm
Body finishNickel
Mating cycles500
Insertion loss0.2dB
Number of ports1
Shield terminationCrimp
Contact terminationCrimp
Center contact platingGold

Product details

BNC plug, 50 Ohm, for RG-58 — 1-221128-0

The TE Connectivity 1-221128-0 is a BNC plug with a male pin centre contact, designed for 50 Ohm systems and crimp termination onto RG-58, 58A, 58B, or 58C cable. It handles signals up to 4 GHz with a rated insertion loss of 0.2 dB, and the bayonet lock gives you a quick quarter-turn mate that holds under vibration. The zinc body gets a nickel finish, the brass centre contact is gold-plated, and the dielectric is polyethylene.

Obsolete — sourcing via surplus channel

No official successor part number is listed.

This plug is built for RG-58 family coax (RG-58, 58A, 58B, 58C) — the most common thin 50 Ohm cable for test leads, patch panels, and short-run RF interconnects. The free-hanging (in-line) body mates with any standard BNC jack or bulkhead receptacle.

RF performance and mechanical life

Rated to 4 GHz with 0.2 dB insertion loss.

Frequently asked questions

What is the impedance of 1-221128-0?

The 1-221128-0 is a 50 Ohm BNC plug, matching the standard impedance for most RF test and telecom systems.