MIL-SPEC · Electronic Components
CR18/U9M877500
Crystal Unit, Quartz
Part NumberCR18/U9M877500
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5955-00-078-2044 (NSN)
Federal Item NameCRYSTAL UNIT,QUARTZ
Federal Supply Class5955 — Crystals and Oscillators
Mode Of OscillationFUNDAMENTAL
Terminal Length0.223 INCHES MINIMUM AND 0.248 INCHES MAXIMUM
Style DesignatorOVAL BODY, PIN TERMINALS
Frequency Tolerance For Operating-0.005 TO 0.005
Center To Center Distance Between0.478 INCHES MINIMUM AND 0.494 INCHES MAXIMUM
Equivalent Resistance Value In Ohm24.0 NOMINAL
Test Data Document81349-MILC3098 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA
Operating Temp Range-55.0 TO 105.0 CELSIUS
Load Capacitance In Picofarads31.5 MINIMUM AND 32.5 MAXIMUM
Body Thickness0.317 INCHES MAXIMUM
Shunt Capacitance In Picofarads7.0 MAXIMUM
Cancelled NSN5955-00-543-0952 (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 CR18/U9M877500 available?
We can source CR18/U9M877500 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 CR18/U9M877500 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If CR18/U9M877500 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 CR18/U9M877500?
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 CR18/U9M877500?
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.