MIL-SPEC · Electronic Components
CR67/U56M45000
Crystal Unit, Quartz
Part NumberCR67/U56M45000
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5955-00-998-4584 (NSN)
Federal Item NameCRYSTAL UNIT,QUARTZ
Federal Supply Class5955 — Crystals and Oscillators
Drive Level Rating1.6 MILLIWATTS MINIMUM AND 2.4 MILLIWATTS MAXIMUM
Mode Of OscillationTHIRD OVERTONE AND FIFTH OVERTONE
Specified Frequency56.450 MEGAHERTZ
Style DesignatorTUBE TYPE, 4 WIRE LEADS
MaterialGLASS COVER HOLDER
Equivalent Resistance Value In Ohm40.0 MAXIMUM
Operating Temp Range-55.0 TO 105.0 CELSIUS AND -55.0 TO 125.0 CELSIUS
Center To Center Distance Between0.184 INCHES MINIMUM AND 0.200 INCHES MAXIMUM
Frequency Tolerance For Operating-0.0025 TO 0.0025 AND -0.0050 TO 0.0050
Terminal Length0.5003 INCHES MINIMUM
Body Thickness0.150 INCHES MAXIMUM
Cancelled NSN5955-00-106-5005 (cancelled)
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 CR67/U56M45000 available?
We can source CR67/U56M45000 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 CR67/U56M45000 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If CR67/U56M45000 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 CR67/U56M45000?
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 CR67/U56M45000?
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.