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TE Connectivity AMP Connectors 221789-1 — RF / Coaxial Connectors

TE 221789-1 SMA Jack, 50 Ohm, 4 GHz, Through Hole, Obsolete

MPN221789-1
Obsolete

TE Connectivity SMA jack, 221789-1, 50 Ohm, 4 GHz, through-hole solder termination, gold-plated brass body, beryllium copper center contact, 500 mating cycles.

$8.6609Ref. price · indicative, final on quote
TE Connectivity AMP Connectors 221789-1 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

221789-1 key specifications
ParameterValue
MountingThrough Hole
Connector typeJack, Female Socket
Fastening typeThreaded
Voltage rating335 V
Frequency - max4 GHz
Operating temperature-65°C ~ 165°C
Body materialBrass
Housing colorGold
Dielectric materialPolytetrafluoroethylene (PTFE)
Center contact materialBeryllium Copper
PackageBulk
Impedance50 Ohms

All specifications

221789-1 additional specifications
ParameterValue
Body finishGold
Mating cycles500
Insertion loss0.3dB
Number of ports1
Shield terminationSolder
Contact terminationSolder
Center contact platingGold

Product details

SMA Jack, 50 Ohm, 4 GHz — Through-Hole, Gold Body

The TE Connectivity 221789-1 is a threaded SMA jack with a female socket center contact, built for 50 Ohm systems up to 4 GHz. Through-hole solder termination on both the center pin and shield keeps the launch solid for board-edge or panel-mount RF paths.

Key RF and Environmental Specs

Rated insertion loss is 0.3 dB across the band — low enough for receiver front-end or antenna feed paths where every tenth of a dB matters. Voltage rating is 335 V.

Frequently asked questions

What is the impedance of the 221789-1 jack?

The 221789-1 is a 50 Ohm SMA jack, rated to 4 GHz maximum frequency with 0.3 dB insertion loss.