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1-5221128-0 — TE Connectivity AMP Connectors product photo
TE Connectivity AMP Connectors

TE Connectivity 1-5221128-0 BNC Plug, 50 Ohm, 4 GHz

MPN1-5221128-0
Obsolete

TE Connectivity BNC plug, male pin, 50 Ohm, 4 GHz, 0.2 dB insertion loss, crimp termination, RG-58 cable group, nickel body, gold centre contact, 500 mating cycles, -55°C to 85°C.

$6.8100Ref. price · indicative, final on quote
1-5221128-0 datasheet
StockContact for availability
MOQ1 pcs
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Specifications

1-5221128-0 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 materialBrass
Housing colorSilver
Dielectric materialPolyethylene (PE)
Center contact materialBrass
PackageBulk
Includes3 pcs - 1 Connector, 1 Contact, 1 Ferrule
Impedance50 Ohms
Body finishNickel
Mating cycles500
Insertion loss0.2dB
Number of ports1
Shield terminationCrimp
Contact terminationCrimp
Center contact platingGold

Product details

BNC Plug for RG-58 — What This Connector Does

The 1-5221128-0: It ships as a 3-piece kit: the connector body, the centre contact, and the ferrule, so you have everything to complete one termination. The 0.2 dB insertion loss at rated frequency is typical for a crimp-style BNC at this price point — the signal penalty is low enough that it won't eat your link budget in a short cable run.

Cable Fit and Termination — RG-58 Only, Crimp It

This plug is built for the RG-58 cable group — RG-58, 58A, 58B, 58C. The included ferrule compresses over the braid; the centre pin crimps onto the signal conductor.

Obsolete — Sourcing the 1-5221128-0 Today

The 1-5221128-0 is listed as obsolete.

What It Won't Do — Cable and Compatibility Limits

This plug is designed for the RG-58 cable group only. It is not compatible with RG-59 or RG-6 — the dielectric diameters and impedance differ, and the crimp ferrule will not fit. The bayonet lock is not a threaded coupling — it will not hold against the same vibration or pull force as an N-type or TNC connector.

Frequently asked questions

Can 1-5221128-0 be used with RG-58A cable?

Yes, the 1-5221128-0 is specified for the RG-58 cable group, which includes RG-58A. The crimp ferrule and centre contact dimensions match that cable diameter.