Raytheon · Electronic Components
1017978-5B
Crystal Unit, Quartz
Part Number1017978-5B
ManufacturerRaytheon
AvailabilityAvailable to order — request a quote
Specifications
NSN5955-01-058-4760 (NSN)
Federal Item NameCRYSTAL UNIT,QUARTZ
Federal Supply Class5955 — Crystals and Oscillators
Terminal Diameter0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM
Operating Temp Range+0.0 TO 40.0 CELSIUS
Controlled Reference Temp25.0 CELSIUS
Style DesignatorHAT TYPE, 3 WIRE LEADS
Frequency Tolerance For Operating-0.002 TO 0.002
Drive Level Rating0.16 MILLIWATTS MINIMUM AND 0.24 MILLIWATTS MAXIMUM
Center To Center Distance Between0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM
Equivalent Resistance Value In Ohm55.0 MAXIMUM
Circuit ResonanceSERIES RESONANCE
Mode Of OscillationFIFTH OVERTONE
Terminal Length0.500 INCHES MINIMUM
Vendor Part Numbers945056-5B
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 1017978-5B available?
We can source 1017978-5B 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 1017978-5B by Raytheon obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 1017978-5B 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 1017978-5B?
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 1017978-5B?
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.