Keysight Technologies · Electronic Components
1251-5903
Connector, Receptacle, Electrical
Part Number1251-5903
ManufacturerKeysight Technologies
AvailabilityAvailable to order — request a quote
Specifications
NSN5935-01-227-1492 (NSN)
Federal Item NameCONNECTOR,RECEPTACLE,ELECTRICAL
Federal Supply Class5935 — Connectors, Electrical
Distance Between Mounting Facility1.852 INCHES NOMINAL
Unthreaded Mounting Hole Diameter0.086 INCHES NOMINAL
Mating End Quantity1
Overall Length2.729 INCHES NOMINAL
Included Contact Quantity17 SINGLE MATING END FIRST CONTACT GROUPING
Precious MaterialGOLD
Terminal TypeSOLDER WELL SINGLE MATING END FIRST CONTACT GROUPING
Contact MaterialCOPPER ALLOY SINGLE MATING END FIRST CONTACT GROUPING
Shell Surface TreatmentPASSIVATE
Precious Material And LocationCONTACT SURFACES GOLD
Contact RemovabilityNONREMOVABLE SINGLE MATING END FIRST CONTACT GROUPING
Vendor Part Numbers235-21-00-307, DCMF21WA4S-A203
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 1251-5903 available?
We can source 1251-5903 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 1251-5903 by Keysight Technologies obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 1251-5903 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 1251-5903?
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 1251-5903?
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.