Keysight Technologies Inc. · Electronic Components
5257A
Plug-In Unit, Electrical
Part Number5257A
ManufacturerKeysight Technologies Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN6625-00-130-0014 (NSN)
Federal Item NamePLUG-IN UNIT,ELECTRICAL-ELECTRON
Federal Supply Class6625 — Test Instruments
Reference Data And LiteratureHEWLETT PACKARD CATALOG: ELECTRONIC INSTRUMENTS & SYSTEMS 1975
Functional ClassificationAA-6.5
Overall Height4.500 INCHES NOMINAL
Unit TypeFREQUENCY CONVERTER
Type Model DesignationPL-1320/U
Overall Width5.000 INCHES NOMINAL
Overall Depth8.500 INCHES NOMINAL
Entry Date76-04-76
Functional DescriptionUSED W/ HEWETT PACKARD 5245 SERIES OF ELECTRONIC COUNTER MAINFRAME; CAN ALSO BE USED W/ 5345A ELECTRONIC COUNTER & 5360A
Vendor Part NumbersPL1320U
Cancelled NSN5963-01-393-4504 (cancelled)
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 5257A available?
We can source 5257A 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 5257A by Keysight Technologies Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 5257A 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 5257A?
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 5257A?
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.