MIL-SPEC · Electronic Components
CN-39B/U
Attenuator, Fixed
Part NumberCN-39B/U
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5985-00-947-8269 (NSN)
Federal Item NameATTENUATOR,FIXED
Federal Supply Class5985 — Antennas and Waveguides
MaterialSTEEL BODY
Test Data Document81349-MIL-A-3933-6 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE D
Mounting MethodCONNECTOR
Power Rating1.0 WATTS AVERAGE AND 1.0 WATTS PEAK
Overall Diameter0.781 INCHES MAXIMUM
Coaxial Connector Series DesignatiN
Input Impedance Rating In Ohms50.0
Voltage Standing Wave Ratio1.15
Overall Length4.375 INCHES MAXIMUM
Rf Signal Attenuation In Decibels20.0
Output Impedance Rating In Ohms50.0
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 CN-39B/U available?
We can source CN-39B/U 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 CN-39B/U by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If CN-39B/U 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 CN-39B/U?
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 CN-39B/U?
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.