Shallco, Inc. · Electronic Components
SPEC 3865
Attenuator, Variable
Part NumberSPEC 3865
ManufacturerShallco, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-00-257-6781 (NSN)
Federal Item NameATTENUATOR,VARIABLE
Federal Supply Class5985 — Antennas and Waveguides
Terminal Type And Quantity6 TAB, SOLDER LUG
Attenuation Per Step In Decibels10.0
Overall Attenuation Range In Decib+0.0 TO 80.0
Impedance Rating In Ohms500.0 INPUT-OUTPUT
Overall Width2.6562 INCHES MAXIMUM
Overall Length3.0156 INCHES MAXIMUM
Mounting Facility Type And Quantit2 THREADED HOLE(S)
Body Length2.0625 INCHES MAXIMUM
Shaft Diameter0.250 INCHES NOMINAL
Adjustment Device Type And Quantit1 SHAFT
Overall Attenuation Accuracy In De-0.40 TO 0.40
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 SPEC 3865 available?
We can source SPEC 3865 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 SPEC 3865 by Shallco, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If SPEC 3865 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 SPEC 3865?
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 SPEC 3865?
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.