Narda Holdings · Electronic Components
4781-20
Attenuator, Fixed
Part Number4781-20
ManufacturerNarda Holdings
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-01-237-3277 (NSN)
Federal Item NameATTENUATOR,FIXED
Federal Supply Class5985 — Antennas and Waveguides
Output Impedance Rating In Ohms50.0
Overall Diameter0.381 INCHES NOMINAL
Voltage Standing Wave Ratio1.15 AND 1.30
Coaxial Connector Series DesignatiSMA
Rf Signal Attenuation In Decibels20.0
Power Rating2.0 WATTS AVERAGE AND 200.0 WATTS PEAK
Voltage Standing Wave Ratio Freque+0.0 TO 4.0 GIGAHERTZ AND +4.0 TO 12.4 GIGAHERTZ
Connection Type Per FunctionMALE INPUT AND FEMALE OUTPUT
Attenuation Accuracy In Decibels-0.60 TO 0.60
Overall Length0.930 INCHES NOMINAL
Attenuation Accuracy Reference Fre12.4 GIGAHERTZ
Vendor Part NumbersMDC8055I-20
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 4781-20 available?
We can source 4781-20 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 4781-20 by Narda Holdings obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 4781-20 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 4781-20?
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 4781-20?
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.