Spectrum Control · Electronic Components
51-311-391
Filter, Radio Frequency Interfere
Part Number51-311-391
ManufacturerSpectrum Control
AvailabilityAvailable to order — request a quote
Specifications
NSN5915-00-524-1850 (NSN)
Federal Item NameFILTER,RADIO FREQUENCY INTERFERE
Federal Supply Class5915 — Filters and Networks
Maximum Dielectric Withstanding Dc300.0 VOLTS AT SEA LEVEL
Functional Terminal Type And Quant1 TAB, SOLDER LUG INPUT FIRST FUNCTION
Source Impedance Rating Per Functi50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
Operating Current Rating Per Funct0.3 BLANK LOCATION NOT OTHERWISE SPECIFIED
Body MaterialMETAL
Mounting Facility Type And Quantit1 THREADED BUSHING LOCATION NOT OTHERWISE SPECIFIED
Maximum Temp Rise25.0 CELSIUS
Inclosure TypeENCASED
Vibration Resistance Range In Hert+10.0 TO 2000.0
Nominal Thread Size0.250 INCHES
Principal Circuitry Type Per FunctINDUCTANCE-CAPACITANCE BLANK LOCATION NOT OTHERWISE SPECIFIED
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 51-311-391 available?
We can source 51-311-391 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 51-311-391 by Spectrum Control obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 51-311-391 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 51-311-391?
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 51-311-391?
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.