Microwave Development Laboratories, Inc. · Electronic Components
20-1391
Coupler, Rotary, Radio Frequency
Part Number20-1391
ManufacturerMicrowave Development Laboratories, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-00-052-0817 (NSN)
Federal Item NameCOUPLER,ROTARY,RADIO FREQUENCY
Federal Supply Class5985 — Antennas and Waveguides
FSC Application DataRADAR SETS,AIRBORNE,EXCEPT FIRE CONTROL AND GUIDED MISSILE
MaterialCOPPER ALLOY
Overall Width4.000 INCHES NOMINAL
Unit TypeWAVEGUIDE
Overall Length11.482 INCHES NOMINAL
Radio Frequency Rating9.4 GIGAHERTZ MINIMUM AND 9.8 GIGAHERTZ MAXIMUM
Overall Height3.781 INCHES NOMINAL
Mounting Configuration2 MTG HOLES,0.190 IN. - 32THD INSERTS ON 1.312 IN. BY 0.375 IN. MTG CENTERS
Vendor Part NumbersA25A109-001-101
RohscompliantYES
Wire Connection MethodScrew
Hazardousfalse
RohsphthalatescompliantYES
Rated Current76 A
Product RangeOMNIMATE Power LUP
IscanonicalY
Conductor Area Csa16 mm²
Wire Size Awg Max6 AWG
No Of Positions8 Positions
SvhcNo SVHC (16-Jan-2020)
Pitch Spacing10.16 mm
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 20-1391 available?
We can source 20-1391 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 20-1391 by Microwave Development Laboratories, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 20-1391 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 20-1391?
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 20-1391?
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.