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Molex 0732510031 — RF / Coaxial Connectors

Molex 0732510031 SMA Plug, 50 Ohm, 18 GHz, RG-402 Kit

MPN0732510031
Active

Molex Series 73251 SMA plug, male pin, 50 Ohm, 18 GHz, RG-402.141 semi-rigid cable, solder termination, gold body, threaded coupling, 500 mating cycles, kit includes connector, contact, insulator.

$3.1951Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

0732510031 key specifications
ParameterValue
Series73251
MountingFree Hanging (In-Line)
Connector typePlug, Male Pin
Fastening typeThreaded
Voltage rating500 V
Frequency - max18 GHz
Cable groupRG-402 (.141\" Semi Rigid)
Operating temperature-65°C ~ 165°C
Body materialStainless Steel
Housing colorGold
Dielectric materialPolytetrafluoroethylene (PTFE)
Center contact materialBrass

All specifications

0732510031 additional specifications
ParameterValue
PackageBulk
Includes3 pcs - 1 Connector, 1 Contact, 1 Insulator
Impedance50 Ohms
Body finishGold
Mating cycles500
Number of ports1
Shield terminationSolder
Contact terminationSolder
Center contact platingGold

Product details

SMA Plug for RG-402 Semi-Rigid — 50 Ohm, 18 GHz

The Molex 0732510031 is an SMA plug, male pin connector from Series 73251, designed specifically for RG-402 (.141" semi-rigid) cable. It delivers a 50 Ohm impedance path rated to 18 GHz — the full bandwidth of the SMA interface, limited by the connector geometry rather than the contact. The threaded coupling ensures a vibration-resistant mate, and the gold-over-brass centre contact with gold stainless steel body gives corrosion resistance for field-deployed or lab-use RF assemblies.

What's in the Kit — and Why That Matters for the Build

That means you don't order a separate crimp terminal or loose insulator — the cable prep and solder assembly are the only steps. The contact termination and shield termination are both solder, so the build requires a controlled-temp iron and the correct solder preform for the centre pin.

500 Mating Cycles — Gold Plating Makes It Field-Serviceable

For a permanent-install cable assembly, 500 cycles is far more than needed; for a lab patch cable or a portable radio interface, it means the connector outlasts the cable.

Frequently asked questions

What cable group is 0732510031 for?

The 0732510031 is designed for RG-402 (.141" semi-rigid) cable. The cable prep and solder termination are specific to this diameter.

Does 0732510031 come with the contact and insulator?

Yes, the 0732510031 ships as a kit that includes the connector body, one centre contact, and one PTFE insulator — three pieces total.

What is the impedance of 0732510031?

The 0732510031 is a 50 Ohm SMA plug, matched to the standard RF system impedance. It is rated to 18 GHz maximum frequency.