Keysight Technologies Inc. · Electronic Components
444A
Probe, Waveguide
Part Number444A
ManufacturerKeysight Technologies Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-00-581-5802 (NSN)
Federal Item NamePROBE,WAVEGUIDE
Federal Supply Class5985 — Antennas and Waveguides
Overall Length2.125 INCHES NOMINAL
Body Surface TreatmentRHODIUM OR SILVER PLATED
Overall Diameter1.250 INCHES NOMINAL
Detector TypeCRYSTAL
Criticality Code JustificationFEAT
FSC Application DataPROBE CARRIAGE
Frequency Rating2.4 GIGAHERTZ MINIMUM AND 18.0 GIGAHERTZ MAXIMUM
Vendor Part NumbersMX1546USM37
Cancelled NSN6625-00-820-4300 (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 444A available?
We can source 444A 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 444A by Keysight Technologies Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 444A 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 444A?
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 444A?
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.