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031-80109 — Amphenol product photo
Amphenol

Amphenol RF 031-80109 BNC Plug, 75 Ohm, 4 GHz, NRND

MPN031-80109
NRND

Amphenol RF BNC plug, 75 Ohm, 4 GHz, 500 mating cycles, crimp termination, bayonet lock, free-hanging, includes connector + contact + ferrule, NRND.

$6.5630Ref. price · indicative, final on quote
031-80109 datasheet
StockContact for availability
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.
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Specifications

031-80109 Technical Specifications
ParameterValue
Mounting typeFree Hanging (In-Line)
Connector typePlug, Male Pin
Fastening typeBayonet Lock
Voltage rating500 V
Frequency - max4 GHz
Cable groupBelden 1694, 1694A, 9248
Operating temperature-65°C~165°C
Body materialPhosphor Bronze
Housing colorSilver
Dielectric materialPolytetrafluoroethylene (PTFE)
Center contact materialBrass
PackageBulk
Includes3 pcs - 1 Connector, 1 Contact, 1 Ferrule
Impedance75Ohm
Body finishNickel
Mating cycles500
Insertion loss0.2dB
Number of ports1
Shield terminationCrimp
Contact terminationCrimp
Center contact platingGold

Product details

The 031-80109: This is the less common 75 Ohm variant of the BNC interface — not the 50 Ohm type used in RF test equipment — so the center contact and dielectric are sized for the higher impedance. Shield termination is crimp, contact termination is crimp.

This means Amphenol RF is no longer actively promoting this part for new projects, though it remains available for existing production runs and field replacements. For a new BOM line, a parametric search on 75 Ohm BNC plugs with crimp termination and 4 GHz bandwidth will identify the current-generation equivalent.

Cable Compatibility and Field Termination

This plug is specified for Belden 1694, 1694A, and 9248 cables — all 75 Ohm precision video coax types with solid or foam polyethylene dielectric. The crimp ferrule and center contact are sized for these cable diameters. The 500 mating cycle rating, supported by the gold-plated center contact, means this connector holds up to repeated patching in a studio or head-end rack without signal degradation from contact wear.

Frequently asked questions

Where can I buy the 031-80109?

Submit a request for current pricing and availability — the quote will confirm lead time at that point.

Is the 031-80109 obsolete?

The 031-80109 carries an NRND (Not Recommended for New Designs) status. It is not fully discontinued, but Amphenol RF does not recommend it for new designs. No official replacement order code has been published. For existing production, it remains available on a quoted basis.

What cable is the 031-80109 compatible with?

The 031-80109 is specified for Belden 1694, 1694A, and 9248 cables — all 75 Ohm precision video coax types. The crimp contact and ferrule are sized for these cable constructions.

What is the impedance of the 031-80109?

This is the video/telecom impedance variant, not the 50 Ohm type used in RF test equipment. Verify your system impedance before ordering.