Spectrum Control · Electronic Components
3M-20
Attenuator, Fixed
Part Number3M-20
ManufacturerSpectrum Control
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-01-030-7821 (NSN)
Federal Item NameATTENUATOR,FIXED
Federal Supply Class5985 — Antennas and Waveguides
Output Impedance Rating In Ohms50.050.0
Rf Signal Attenuation In Decibels20.020.0
Voltage Standing Wave Ratio Freque+0.0 TO 4.0 GIGAHERTZ AND +0.0 TO 4.0 GIGAHERTZ AND +4.0 TO 8.0 GIGAHERTZ AND +4.0 TO 8.0 GIGAHERTZ AND +8.0 TO 12.4 GIG
Overall Length1.200 INCHES NOMINAL1.200 INCHES NOMINAL
Attenuation Accuracy In Decibels-0.50 TO 0.50-0.50 TO 0.50
Overall Diameter0.360 INCHES NOMINAL0.360 INCHES NOMINAL
Input Impedance Rating In Ohms50.050.0
Power Rating2.0 WATTS AVERAGE AND 2.0 WATTS AVERAGE AND 500.0 WATTS PEAK500.0 WATTS PEAK
Coaxial Connector Series DesignatiWPMWPM
MaterialSTEEL CORROSION RESISTING BODY
Surface TreatmentPASSIVATE BODY
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 3M-20 available?
We can source 3M-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 3M-20 by Spectrum Control obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 3M-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 3M-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 3M-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.