Cinch Connectivity Solutions Inc. · Electronic Components
290-20
Attenuator, Fixed
Part Number290-20
ManufacturerCinch Connectivity Solutions Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-01-009-6437 (NSN)
Federal Item NameATTENUATOR,FIXED
Federal Supply Class5985 — Antennas and Waveguides
Application DesignTRANSMISSION LINE
Body StyleROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE
Input Impedance Rating In Ohms50.0
Overall Length1.000 INCHES MINIMUM AND 1.040 INCHES MAXIMUM
Connection Type Per FunctionFEMALE INPUT AND MALE OUTPUT
Terminal Type And Quantity2 CONNECTOR
Power Rating2.0 WATTS AVERAGE
Attenuation Accuracy In Decibels-0.50 TO 0.50
Frequency Range0.000 HERTZ MINIMUM AND 18.000 GIGAHERTZ MAXIMUM
Mounting MethodCONNECTOR
Temperature Sensitivity Attenuatio0.0001
Vendor Part NumbersATT-0290-20-SMA-02, MDC90034-20
Cancelled NSN5985-01-292-1229 (cancelled)
ProducttraceabilityNo
RohscompliantTBA
IscanonicalY
Hazardousfalse
RohsphthalatescompliantTBA
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 290-20 available?
We can source 290-20 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 290-20 by Cinch Connectivity Solutions Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 290-20 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 290-20?
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 290-20?
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.