Northrop Grumman Support Services · Electronic Components
128C539H03
Attenuator, Fixed
Part Number128C539H03
ManufacturerNorthrop Grumman Support Services
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-01-057-8944 (NSN)
Federal Item NameATTENUATOR,FIXED
Federal Supply Class5985 — Antennas and Waveguides
Application DesignTRANSMISSION LINETRANSMISSION LINE
Overall Length1.180 INCHES MINIMUM AND 1.180 INCHES MINIMUM AND 1.240 INCHES MAXIMUM1.240 INCHES MAXIMUM
Connection Type Per FunctionFEMALE OUTPUT AND FEMALE OUTPUT AND MALE INPUTMALE INPUT
Voltage Standing Wave Ratio1.251.25
MaterialSTEEL CORROSION RESISTING BODY
Overall Diameter0.390 INCHES MAXIMUM0.390 INCHES MAXIMUM
Frequency Range0.000 HERTZ MINIMUM AND 0.000 HERTZ MINIMUM AND 4.000 GIGAHERTZ MAXIMUM4.000 GIGAHERTZ MAXIMUM
Coaxial Connector Series DesignatiSMASMA
Output Impedance Rating In Ohms50.050.0
Input Impedance Rating In Ohms50.050.0
Attenuation Accuracy In Decibels-0.80 TO 0.80-0.80 TO 0.80
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 128C539H03 available?
We can source 128C539H03 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 128C539H03 by Northrop Grumman Support Services obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 128C539H03 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 128C539H03?
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 128C539H03?
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.