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31-315-RFX — Amphenol product photo
Amphenol

Amphenol RF 31-315-RFX BNC Plug, 50 Ohm, 4 GHz

MPN31-315-RFX
Active

Amphenol RF BNC plug, male pin, 50 Ohm, 4 GHz, crimp termination, RG-174/188/316 cable group, gold centre contact, 500 mating cycles, -65°C~165°C.

$4.0400Ref. price · indicative, final on quote
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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

31-315-RFX Technical Specifications
ParameterValue
Mounting typeFree Hanging (In-Line)
Connector typePlug, Male Pin
Fastening typeBayonet Lock
Voltage rating500 V
Frequency - max4 GHz
Cable groupRG-174, 188, 188A, 316, LMR-100, M17/119-RG174
Operating temperature-65°C~165°C
Body materialBrass
Housing colorSilver
Dielectric materialPolyoxymethylene (POM) Acetal
Center contact materialBrass
PackageBulk
Includes4 pcs - 1 Connector, 1 Contact, 1 Ferrule, 1 Insulator
Impedance50Ohm
Body finishNickel
Mating cycles500
Insertion loss0.2dB
Number of ports1
Shield terminationCrimp
Contact terminationCrimp
Center contact platingGold

Product details

50 Ohm BNC Plug for Thin-Flex Coax — 4 GHz, Crimp Termination

The 31-315-RFX: The 4 GHz frequency ceiling covers legacy video distribution, instrumentation, and telecom baseband links — not modern multi-GHz data backplanes. The kit ships as four pieces: the connector body, a crimp contact, a ferrule, and an insulator.

Cable Compatibility — Which Coax Fits

This plug is specced for RG-174, RG-188, RG-188A, RG-316, LMR-100, and M17/119-RG174 — all thin-jacket cables with a nominal dielectric diameter around 0.100 inch. The crimp ferrule and centre contact are sized for that cable group; the plug will not crimp properly on RG-58 or RG-213, which have a thicker dielectric. For RG-58 cable, the sibling 31-320-RFX uses the same BNC plug body but with a larger ferrule and contact set.

No last-time-buy or end-of-life notice has been issued.

Frequently asked questions

What cable types are compatible with 31-315-RFX?

The plug fits RG-174, RG-188, RG-188A, RG-316, LMR-100, and M17/119-RG174 coaxial cables. It does not fit RG-58 or RG-213 — use the 31-320-RFX for those.