Microwave Engineering Corporation · Electronic Components
R91A3N
Coupler, Directional
Part NumberR91A3N
ManufacturerMicrowave Engineering Corporation
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-00-031-3641 (NSN)
Federal Item NameCOUPLER,DIRECTIONAL
Federal Supply Class5985 — Antennas and Waveguides
Overall Width1.970 INCHES MAXIMUM
Terminal Fitting Controlling AgencWESTINGHOUSE ELECTRIC CORP
Identifying NumberTERMINAL FITTING TYPE N; PART NO. MRC475G1; PART NO. MRC4751
Usage DesignMAIN LINE AND SECONDARY LINE TERMINAL FITTING
Unit TypeWAVEGUIDE
Overall Length10.940 INCHES MAXIMUM
Overall Height4.500 INCHES MAXIMUM
Design TypeBIDIRECTIONAL
Power Loss In Decibels30.0
Vendor Part Numbers990C090H02
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 R91A3N available?
We can source R91A3N 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 R91A3N by Microwave Engineering Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If R91A3N 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 R91A3N?
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 R91A3N?
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.