Raytheon · Electronic Components
L221976-400
Crystal Unit, Quartz
Part NumberL221976-400
ManufacturerRaytheon
AvailabilityAvailable to order — request a quote
Specifications
NSN5955-00-941-7854 (NSN)
Federal Item NameCRYSTAL UNIT,QUARTZ
Federal Supply Class5955 — Crystals and Oscillators
Circuit ResonanceSERIES RESONANCE
Mode Of OscillationTHIRD OVERTONE
Overall Length1.023 INCHES MAXIMUM
Center To Center Distance Between0.478 INCHES MINIMUM AND 0.494 INCHES MAXIMUM
Style DesignatorOVAL BODY, PIN TERMINALS
Operating Temp Range-40.0 TO 90.0 CELSIUS
Equivalent Resistance Value In Ohm25.0 NOMINAL
Drive Level Rating2.0 MILLIWATTS MAXIMUM
Specified Frequency45.56667 MEGAHERTZ
Overall Thickness0.340 INCHES MINIMUM AND 0.345 INCHES MAXIMUM
Frequency Tolerance For Operating-0.005 TO 0.005
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 L221976-400 available?
We can source L221976-400 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 L221976-400 by Raytheon obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If L221976-400 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 L221976-400?
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 L221976-400?
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.