Rockwell Collins · Electronic Components
289-4278-00
Crystal Unit, Quartz
Part Number289-4278-00
ManufacturerRockwell Collins
AvailabilityAvailable to order — request a quote
Specifications
NSN5955-00-931-5635 (NSN)
Federal Item NameCRYSTAL UNIT,QUARTZ
Federal Supply Class5955 — Crystals and Oscillators
Style DesignatorOVAL BODY, WIRE LEADS
Terminal Length1.531 INCHES NOMINAL
Overall Length0.525 INCHES NOMINAL
Overall Width0.417 INCHES NOMINAL
Terminal Diameter0.017 INCHES NOMINAL
Overall Thickness0.167 INCHES NOMINAL
Vendor Part Numbers289-4278-000
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 289-4278-00 available?
We can source 289-4278-00 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 289-4278-00 by Rockwell Collins obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 289-4278-00 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 289-4278-00?
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 289-4278-00?
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.