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TE Connectivity AMP Connectors 1-2081204-1 — RF / Coaxial Connectors

TE KOAXXA 1-2081204-1 SMA Jack, 50 Ohm, 18 GHz, Obsolete

MPN1-2081204-1
Obsolete

TE Connectivity KOAXXA series SMA jack, female socket, 1-2081204-1, 50 Ohm, 18 GHz, 335 V, panel mount bulkhead, solder contact, crimp shield, RG-178/196.

$4.7800Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for stock & sourcing questions
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent supplier — new & surplus connector stock· Listing updated Jul 2026

Specifications

1-2081204-1 key specifications
ParameterValue
SeriesKOAXXA
MountingPanel Mount
Connector typeJack, Female Socket
Fastening typeThreaded
Voltage rating335 V
Frequency - max18 GHz
Mounting featureBulkhead - Front Side Nut
Cable groupRG-178, 196
Operating temperature-65°C~85°C
Body materialZinc
Housing colorSilver
Dielectric materialPolymethylpentene (PMP)

All specifications

1-2081204-1 additional specifications
ParameterValue
Center contact materialCopper Alloy
PackageBulk
Includes4 pcs - 1 Connector, 1 Ferrule, 1 Lockwasher, 1 Nut
Impedance50Ohm
Body finishNickel
Mating cycles500
Number of ports1
Shield terminationCrimp
Contact terminationSolder
Center contact platingGold

Product details

RF Performance and Construction

The 1-2081204-1: The 50 Ohm impedance and 18 GHz frequency ceiling place this connector in the upper band for standard SMA — suitable for test equipment, antenna feeds, and instrumentation links where signal integrity matters up into the Ku band. The centre contact is gold-plated copper alloy, soldered to the cable centre conductor; the shield is crimped to the zinc body with a nickel finish.

Mating and Durability

Threaded coupling provides vibration-resistant mating — standard for SMA. The bulkhead front-side nut mounting allows the connector to be secured from outside the panel, simplifying installation in enclosures where rear access is limited.

Buyers maintaining a stock of RG-178/196 SMA jacks should evaluate a last-time-buy quantity or identify a form-fit-function alternative from the KOAXXA or equivalent SMA series.

Frequently asked questions

Is 1-2081204-1 obsolete?

Yes, TE Connectivity lists 1-2081204-1 as Obsolete. No official replacement part number has been published. For legacy repairs, source through surplus or broker channels; for new designs, select a current-production SMA jack from the KOAXXA series or equivalent.

What cable does 1-2081204-1 work with?

1-2081204-1 is designed for RG-178 and RG-196 coaxial cable groups. The kit includes the ferrule for crimping the shield, and the centre contact is soldered to the cable conductor.