Cinch Connectivity Solutions Inc. · Electronic Components
290HM3
Attenuator, Fixed
Part Number290HM3
ManufacturerCinch Connectivity Solutions Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-01-398-4749 (NSN)
Federal Item NameATTENUATOR,FIXED
Federal Supply Class5985 — Antennas and Waveguides
Body StyleROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE
Rf Signal Attenuation In Decibels3.0
Operating Temp Range-55.0 TO 125.0 CELSIUS
Coaxial Connector Series DesignatiSMA
Voltage Standing Wave Ratio1.07
Overall Diameter0.280 INCHES NOMINAL
Power Rating2.0 WATTS AVERAGE AND 200.0 WATTS PEAK
Overall Length0.880 INCHES NOMINAL
Frequency Range0.000 HERTZ MINIMUM AND 18.000 GIGAHERTZ MAXIMUM
Connection Type Per FunctionFEMALE INPUT AND MALE OUTPUT
Terminal Type And Quantity2 CONNECTOR
ESD/EMICode A — ESD/EMI sensitive item
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 290HM3 available?
We can source 290HM3 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 290HM3 by Cinch Connectivity Solutions Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 290HM3 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 290HM3?
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 290HM3?
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.