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919-131J-51SX — Amphenol product photo
Amphenol

Amphenol RF 919-131J-51SX MCX Jack, 50 Ohm, 6 GHz

MPN919-131J-51SX
Active

Amphenol RF MCX jack, female socket, 50 Ohms, 6 GHz, free hanging (in-line), solder contact, crimp shield, gold body, RG-178/196 cable group, 500 mating cycles, 0.1 dB insertion loss, -65°C to 165°C.

$9.0900Ref. price · indicative, final on quote
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Specifications

919-131J-51SX Technical Specifications
ParameterValue
Mounting typeFree Hanging (In-Line)
Connector typeJack, Female Socket
Fastening typeSnap-On
Frequency - max6 GHz
Cable groupRG-178, 178A, 178B, 196, 196A, M17/93-RG178
Operating temperature-65°C ~ 165°C
Body materialBrass
Housing colorGold
Dielectric materialPolytetrafluoroethylene (PTFE)
Center contact materialBeryllium Copper
PackageBulk
Impedance50 Ohms
Body finishGold
Mating cycles500
Insertion loss0.1dB
Number of ports1
Shield terminationCrimp
Contact terminationSolder
Center contact platingGold

Product details

RF Interconnect for Tight Spaces: MCX Jack on RG-178

The 500-cycle mating life is typical for a snap-on MCX; the gold plating on both body and centre contact resists fretting corrosion through repeated connects in field-service or test-bench use.

Cable and Termination Match

This jack is specified for cable groups RG-178, 178A, 178B, 196, 196A, and M17/93-RG178 — all 50 Ohm coax with a similar dielectric diameter. The shield is terminated by crimp, the centre contact by solder. For a harness shop, that means a standard crimp tool for the braid and a soldering iron for the pin; no special die sets beyond the usual RG-178 hex crimp. The free-hanging mount means no PCB footprint to design — the cable assembly lands in-line, which simplifies routing in enclosures where a right-angle board jack would force a bend radius violation.

The base product number is 91913, which covers the MCX series variants from Amphenol RF.

Frequently asked questions

What is the impedance of 919-131J-51SX?

The impedance is 50 Ohms, the standard for RF signal paths in telecom, test equipment, and instrumentation.

What is the mounting style of 919-131J-51SX?

Free hanging (in-line) — it terminates to a cable, not a PCB. The shield is crimped, the centre contact soldered.