Skip to main content
Amphenol 031-70237 — RF / Coaxial Connectors

Amphenol RF 031-70237 BNC Plug, 75 Ohm, 3 GHz, NRND

MPN031-70237
NRND

Amphenol RF BNC plug, male pin, 75 Ohm, 3 GHz, crimp termination, free-hanging, includes connector + contact + ferrule, 500 mating cycles, nickel body, gold center contact.

$5.0800Ref. 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

031-70237 key specifications
ParameterValue
MountingFree Hanging (In-Line)
Connector typePlug, Male Pin
Fastening typeBayonet Lock
Voltage rating500 V
Frequency - max3 GHz
Cable groupAT&T 735, 735A, Belden 735A1
Operating temperature-40°C~85°C
Body materialBrass
Housing colorSilver
Dielectric materialPolytetrafluoroethylene (PTFE)
Center contact materialBrass
PackageBulk

All specifications

031-70237 additional specifications
ParameterValue
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 031-70237: Rated to 3 GHz maximum frequency with a 0.2 dB insertion loss, this plug suits 75 Ohm video, broadcast, and data-signal paths where signal integrity matters up into the low microwave range.

It remains available through the independent distribution channel for existing BOM lines, but new projects should select a current-production 75 Ohm BNC plug from the Amphenol RF catalogue. No official direct-replacement order code is listed; sourcing is per RFQ against the remaining factory and distributor inventory.

Termination Checklist — Crimp, Don't Solder

The kit includes one contact and one ferrule — order additional kits for multi-position runs. The centre contact crimps onto the signal conductor; the ferrule crimps over the braid and jacket. No soldering iron needed, which speeds field installation and avoids heat damage to the PTFE dielectric. Mates with any standard 75 Ohm BNC jack (female) with a bayonet lock.

Frequently asked questions

Is 031-70237 obsolete?

The 031-70237 is NRND (Not Recommended for New Designs), not fully obsolete.

What cable does 031-70237 work with?

The 031-70237 is specified for AT&T 735, 735A, and Belden 735A1 cable groups. The included ferrule and contact are sized for the jacket diameter and centre conductor of those cables.