Marc Alan Group · Electronic Components
4251-20SMA
Coupler, Directional
Part Number4251-20SMA
ManufacturerMarc Alan Group
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-01-150-4451 (NSN)
Federal Item NameCOUPLER,DIRECTIONAL
Federal Supply Class5985 — Antennas and Waveguides
Terminal Fitting Controlling AgencNORSAL INDUSTRIES INC
Design TypeBIDIRECTIONAL
Usage DesignMAIN LINE AND SECONDARY LINE TERMINAL FITTING
Power Loss In Decibels0.3
Identifying NumberTERMINAL FITTING MIL-C-39012
Unit TypeCOAXIAL LINE AND WAVEGUIDE
Radio Frequency Rating1.0 GIGAHERTZ MINIMUM AND 18.0 GIGAHERTZ MAXIMUM
Overall Height0.688 INCHES NOMINAL
Overall Width0.500 INCHES NOMINAL
Overall Length3.797 INCHES NOMINAL
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 4251-20SMA available?
We can source 4251-20SMA 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 4251-20SMA by Marc Alan Group obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 4251-20SMA 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 4251-20SMA?
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 4251-20SMA?
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.