Keysight Technologies Inc. · Electronic Components
3550B
Test Set, Telephone
Part Number3550B
ManufacturerKeysight Technologies Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN6625-00-244-3032 (NSN)
Federal Item NameTEST SET,TELEPHONE
Federal Supply Class6625 — Test Instruments
Enclosure FeatureMULTIPLE ITEM W/CARRYING CASE
Ac Voltage Rating115.0 VOLTS NOMINAL AND 230.0 VOLTS NOMINAL LOCATION NOT OTHERWISE SPECIFIED
MaterialALUMINUM CARRYING CASE
Accessory Identifying NumberH20-204C02 TYPE NO. AND 403B01 TYPE NO. AND 353A TYPE NO. AND 3550A45A TYPE NO. AND 11035A TYPE NO. AND 8120.0078 TYPE N
Electrical Power Source RelationshOPERATING
Frequency Rating50.0 HERTZ MINIMUM AND 400.0 HERTZ MAXIMUM LOCATION NOT OTHERWISE SPECIFIED
Dc Voltage Rating27.0 VOLTS NOMINAL LOCATION NOT OTHERWISE SPECIFIED
Test Type For Which DesignedMEASURES TRANSMISSION LINE AND SYSTEMS CHARACTERISTICS SUCH AS ATTENUATION,FREQUENCY RESPONSE AND GAIN
Reference Data And LiteratureHEWLETT PACKARD 1981 CATALOG
Height8.370 INCHES NOMINAL
Accessory Controlling AgencyHEWLETT-PACKARD CO
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 3550B available?
We can source 3550B 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 3550B by Keysight Technologies Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 3550B 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 3550B?
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 3550B?
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.