MIL-SPEC · Electronic Components
CR27/U5M139583
Crystal Unit, Quartz
Part NumberCR27/U5M139583
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5955-00-903-2979 (NSN)
Federal Item NameCRYSTAL UNIT,QUARTZ
Federal Supply Class5955 — Crystals and Oscillators
Controlled Reference Temp75.0 CELSIUS
Load Capacitance In Picofarads31.5 MINIMUM AND 32.5 MAXIMUM
Specified Frequency5.139583 MEGAHERTZ
Body Length0.775 INCHES MAXIMUM
Terminal Length0.223 INCHES MINIMUM AND 0.248 INCHES MAXIMUM
Operating Temp Range+70.0 TO 80.0 CELSIUS
Center To Center Distance Between0.478 INCHES MINIMUM AND 0.494 INCHES MAXIMUM
Frequency Tolerance For Operating-0.002 TO 0.002
Equivalent Resistance Value In Ohm35.0 NOMINAL
Drive Level Rating4.0 MILLIWATTS MINIMUM AND 6.0 MILLIWATTS MAXIMUM
Style DesignatorOVAL BODY, PIN TERMINALS
Cancelled NSN5955-00-667-1597 (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 CR27/U5M139583 available?
We can source CR27/U5M139583 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 CR27/U5M139583 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If CR27/U5M139583 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 CR27/U5M139583?
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 CR27/U5M139583?
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.