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US Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · Electronic Components
SM-A-778179-2
Switch, Waveguide
Part NumberSM-A-778179-2
ManufacturerUS Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-00-140-8853 (NSN)
Federal Item NameSWITCH,WAVEGUIDE
Federal Supply Class5985 — Antennas and Waveguides
Surface TreatmentENAMEL BODY OUTSIDE SURFACES
Thread Series DesignatorUNF MOUNTING FACILITY HOLE
Nominal Thread Size0.190 INCHES MOUNTING FACILITY HOLE
Frequency Rating7250.0 MEGAHERTZ MINIMUM AND 7750.0 MEGAHERTZ MAXIMUM SINGLE FREQUENCY CROSSTALK REFERENCE
Longest Horizontal Distance Betwee1.990 INCHES MINIMUM AND 2.010 INCHES MAXIMUM FIRST MOUNTING FACILITY PATTERN
Thread Class2B MOUNTING FACILITY HOLE
Voltage Standing Wave Ratio1.10 SINGLE
Switching Time500.0 MILLISECONDS
MaterialALUMINUM BODY
Longest Vertical Distance Between1.990 INCHES MINIMUM AND 2.010 INCHES MAXIMUM FIRST MOUNTING FACILITY PATTERN
Overall Length5.780 INCHES MAXIMUM
Vendor Part Numbers33D42500
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 SM-A-778179-2 available?
We can source SM-A-778179-2 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 SM-A-778179-2 by US Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If SM-A-778179-2 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 SM-A-778179-2?
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 SM-A-778179-2?
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.