Spectrum Control · Electronic Components
51-321-305
Filter, Radio Frequency Interfere
Part Number51-321-305
ManufacturerSpectrum Control
AvailabilityAvailable to order — request a quote
Specifications
NSN5915-01-681-1406 (NSN)
Federal Item NameFILTER,RADIO FREQUENCY INTERFERE
Federal Supply Class5915 — Filters and Networks
Operating Voltage Rating And Type250.0 VOLTS DC SINGLE LOW PASS SECOND FUNCTION
Body Outside Diameter0.687 INCHES NOMINAL
Mounting Facility Screw Thread SerUNF
Mounting Facility Type And Quantit2 SLOT ALL FUNCTIONS
Mounting Slot Width0.110 INCHES NOMINAL
Overall Length1.745 INCHES NOMINAL
Style DesignatorROUND TERMINAL/TERMINALS ON OPPOSITE SURFACES
Nominal Thread Size0.3125 INCHES
Inclosure TypeENCASED
Functional Terminal Type And Quant2 TAB, SOLDER LUG VOLTAGE ALL FUNCTIONS
Power Line Frequency Rating Per Fu400.0 SINGLE LOW PASS ALL FUNCTIONS
ESD/EMICode B — ESD/EMI sensitive item
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 51-321-305 available?
We can source 51-321-305 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 51-321-305 by Spectrum Control obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 51-321-305 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 51-321-305?
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 51-321-305?
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.