General Dynamics Mission Systems, Inc. · Electronic Components
318C143
Attenuator, Variable
Part Number318C143
ManufacturerGeneral Dynamics Mission Systems, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-00-259-3789 (NSN)
Federal Item NameATTENUATOR,VARIABLE
Federal Supply Class5985 — Antennas and Waveguides
Mounting Facility Nominal Screw Th0.375 INCHES
Body Diameter1.094 INCHES NOMINAL
Overall Attenuation Range In Decib+0.0 TO 12.0
Terminal Type And Quantity6 TAB, SOLDER LUG
Bushing Length0.219 INCHES NOMINAL
Impedance Rating In Ohms600.0 INPUT-OUTPUT
Mounting Facility Screw Thread SerUNEF
Application DesignAUDIO
Mounting Facility Type And Quantit1 THREADED BUSHING
Frequency Range100.000 HERTZ MINIMUM AND 20.000 KILOHERTZ MAXIMUM
Attenuation Variation MethodCONTINUOUS
Vendor Part Numbers302092403
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 318C143 available?
We can source 318C143 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 318C143 by General Dynamics Mission Systems, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 318C143 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 318C143?
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 318C143?
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.