Lockheed Martin · Electronic Components
C4628-4
Attenuator, Fixed
Part NumberC4628-4
ManufacturerLockheed Martin
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-00-256-0902 (NSN)
Federal Item NameATTENUATOR,FIXED
Federal Supply Class5985 — Antennas and Waveguides
Voltage Standing Wave Ratio Freque+0.0 TO 4.0 GIGAHERTZ AND +4.0 TO 12.4 GIGAHERTZ AND +12.4 TO 18.0 GIGAHERTZ
Operating Temp Range-55.0 TO 125.0 CELSIUS
Attenuation Accuracy Reference Fre18.0 GIGAHERTZ
Attenuation Accuracy In Decibels-0.75 TO 0.75
Body StyleROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE
Coaxial Connector Series DesignatiSMA
Output Impedance Rating In Ohms50.0
Voltage Standing Wave Ratio1.15 AND 1.25 AND 1.35
Overall Length1.500 INCHES NOMINAL
Input Impedance Rating In Ohms50.0
Overall Diameter0.500 INCHES NOMINAL
Vendor Part Numbers18B-20, 8493B020, 50MP20-845, MDC90068-20, MDC8065C-20, HP8493B-OPT020
Cancelled NSN5985-00-626-4701 (cancelled)
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 C4628-4 available?
We can source C4628-4 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 C4628-4 by Lockheed Martin obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If C4628-4 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 C4628-4?
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 C4628-4?
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.