Merrimac Industries · Electronic Components
AUM-25A/40748
Attenuator, Variable
Part NumberAUM-25A/40748
ManufacturerMerrimac Industries
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-01-065-5577 (NSN)
Federal Item NameATTENUATOR,VARIABLE
Federal Supply Class5985 — Antennas and Waveguides
Mounting Facility PatternFOUR POSITION RECTANGULAR
Power Rating2.0 WATTS AVERAGE
Overall Attenuation Range In Decib+1.0 TO 12.0
Center To Center Distance Between0.837 INCHES MINIMUM AND 0.847 INCHES MAXIMUM
Overall Height1.720 INCHES NOMINAL
Frequency Range600.000 MEGAHERTZ MINIMUM AND 650.000 MEGAHERTZ MAXIMUM
Terminal Type And Quantity1 MALE COAXIAL CONNECTOR AND 1 CONNECTOR, COAXIAL, FEMALE
Unthreaded Mounting Hole Diameter0.090 INCHES MINIMUM AND 0.094 INCHES MAXIMUM
Adjustment Device Type And Quantit1 SLOTTED SCREW
Attenuation Variation MethodCONTINUOUS
Overall Width0.470 INCHES MINIMUM AND 0.530 INCHES MAXIMUM
Vendor Part Numbers911742-1
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 AUM-25A/40748 available?
We can source AUM-25A/40748 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 AUM-25A/40748 by Merrimac Industries obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If AUM-25A/40748 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 AUM-25A/40748?
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 AUM-25A/40748?
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.