Amphenol · Electronic Components
31-221-RFX
RF Connectors BULKHEAD JACK 50 ohm SOLDER CUP DIE CAST
Part Number31-221-RFX
ManufacturerAmphenol
AvailabilityAvailable to order — request a quote
Specifications
NSN5935-01-383-4021 (NSN)
Federal Item NameCONNECTOR,RECEPTACLE,ELECTRICAL
Terminal TypeCRIMP AND SOLDER SINGLE MATING END SINGLE CONTACT GROUPING
Overall Length1.063 INCHES NOMINAL
Overall Diameter0.500 INCHES NOMINAL
Body StyleSTRAIGHT SHAPE, EXTERNAL COUPLING
Contact ArrangementRF SINGLE MATING END
Included Contact Quantity1 SINGLE MATING END SINGLE CONTACT GROUPING
Included Contact TypeROUND SOCKET SINGLE MATING END SINGLE CONTACT GROUPING
Insert Position In Deg0.0 AND 180.0
Terminal LocationBACK SINGLE MATING END SINGLE CONTACT GROUPING
Mounting Facility Thickness0.125 INCHES NOMINAL
Federal Supply Class5935 — Connectors, Electrical
Contact Position Arrangement StyleRF SINGLE MATING END
Mating End Quantity1
Distance From Mounting Shoulder To0.484 INCHES NOMINAL
Vendor Part Numbers031-221-RFX
ESD/EMICode A — ESD/EMI sensitive item
RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Frequently asked
Is 31-221-RFX available?
We can source 31-221-RFX even if it isn't in our active stock list. As an independent distributor we reach inventory outside the franchise channel — including hard-to-find and obsolete parts. Send us a quote request.
Is 31-221-RFX by Amphenol obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 31-221-RFX has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like 31-221-RFX?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for 31-221-RFX?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.