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031-239 — Amphenol product photo
Amphenol

Amphenol RF 031-239 BNC Jack, 50 Ohm, 4 GHz, Bulkhead

MPN031-239
Active

Amphenol RF BNC jack, 031-239, 50 Ohm, 4 GHz, 500 V, bulkhead rear-side nut mount, solder cup, silver-plated beryllium copper/brass center contact, PTFE dielectric, nickel brass body, includes gasket, lockwasher, nut.

$14.1500Ref. price · indicative, final on quote
StockIn Stock (23)
Lead timeIn Stock wk
MOQ1 pcs
  • New & original stockTraceable channels only — no mixed lots, no re-taped reels.
  • Factory packaging where availableSealed reels, trays and bags; cut quantities always stated on the quote.
  • Photo-verified countsEvery line counted and photographed before the box closes.
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Specifications

031-239 Technical Specifications
ParameterValue
Mounting typePanel Mount
Connector typeJack, Female Socket
Fastening typeBayonet Lock
Voltage rating500 V
Frequency - max4 GHz
Mounting featureBulkhead - Rear Side Nut
Operating temperature-65°C~165°C
Body materialBrass
Housing colorSilver
Dielectric materialPolytetrafluoroethylene (PTFE)
Center contact materialBeryllium Copper; Brass
PackageBulk
FeaturesExtended Insulation
Includes4 pcs - 1 Connector, 1 Gasket, 1 Lockwasher, 1 Nut
Impedance50Ohm
Body finishNickel
Mating cycles500
Insertion loss0.2dB
Number of ports1
Shield terminationSolder
Contact terminationSolder Cup
Center contact platingSilver

Product details

50 Ohm BNC Jack, Bulkhead Mount, 4 GHz

The 031-239: It comes as a kit with the connector body, a gasket, a lockwasher, and a nut — everything for a clean bulkhead install from the rear side. The center contact is silver-plated beryllium copper and brass, mated to a PTFE dielectric that holds the impedance steady across temperature.

The 4 GHz max frequency means this jack holds its 50 Ohm characteristic impedance across the DC-to-4 GHz band. The 0.2 dB insertion loss is low enough for most lab-grade signal paths.

Termination is solder cup on the center contact and a solder lug for the shield.

The 031-239 is listed as Active — no end-of-life notice, no last-time buy.

Frequently asked questions

Does 031-239 include mounting hardware?

Yes, the kit includes a gasket, a lockwasher, and a nut for bulkhead mounting.