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US Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · Electronic Components
SM-B-650998
Attenuator, Variable
Part NumberSM-B-650998
ManufacturerUS Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-00-153-0119 (NSN)
Federal Item NameATTENUATOR,VARIABLE
Federal Supply Class5985 — Antennas and Waveguides
Overall Height1.000 INCHES NOMINAL
Precious MaterialRHODIUM AND SILVER
Overall Length4.250 INCHES MAXIMUM
Terminal Type And Quantity1 CONNECTOR, COAXIAL, FEMALE AND 1 MALE COAXIAL CONNECTOR
Impedance Rating In Ohms50.0 INPUT-OUTPUT
Center To Center Distance Between1.250 INCHES NOMINAL
Shaft Length1.730 INCHES NOMINAL
Body StyleCOAXIAL TYPE
Frequency Range4.400 GIGAHERTZ MINIMUM AND 5.000 GIGAHERTZ MAXIMUM
Insertion Loss At Minimum Attenuat0.5
Shaft TypeROUND, SLOTTED
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 SM-B-650998 available?
We can source SM-B-650998 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 SM-B-650998 by US Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If SM-B-650998 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 SM-B-650998?
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 SM-B-650998?
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.