Keysight Technologies Inc. · Electronic Components
3550A
Test Set, Telephone
Part Number3550A
ManufacturerKeysight Technologies Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN6625-00-740-0344 (NSN)
Federal Item NameTEST SET,TELEPHONE
Federal Supply Class6625 — Test Instruments
MaterialALUMINUM CARRYING CASE
Electrical Power Source RelationshOPERATING
Frequency Rating50.0 HERTZ MINIMUM AND 400.0 HERTZ MAXIMUM LOCATION NOT OTHERWISE SPECIFIED
PhaseSINGLE LOCATION NOT OTHERWISE SPECIFIED
Length19.200 INCHES NOMINAL
Major ComponentsGENERATOR;VOLTMETER,ELECTRONIC;ATTENUATOR,IMPEDANCE MATCHING;CABLE ASSEMBLY,POWER ELECTRICAL;CABLE ASSEMBLY,RADIO FREQUE
Test Type For Which DesignedALIGNMENT OF MULTICHANNEL COMMUNICATION SYSTEMS;MEASUREMENT OF GAIN,ATTENUATION,AND FREQ RESPONSE
Dc Voltage Rating28.0 VOLTS NOMINAL LOCATION NOT OTHERWISE SPECIFIED
Ac Voltage Rating115.0 VOLTS MINIMUM AND 230.0 VOLTS MAXIMUM LOCATION NOT OTHERWISE SPECIFIED
Accessory Controlling AgencyJETDS AND JETDS AND JETDS AND JETDS AND JETDS
Accessory Identifying NumberSG-543A/U TYPE NO. AND ME-260A/U TYPE NO. AND CN-4071/USM-181 TYPE NO. AND CX-9031/U TYPE NO. AND CG-3566/U TYPE NO.
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 3550A available?
We can source 3550A 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 3550A by Keysight Technologies Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 3550A 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 3550A?
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 3550A?
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.