MIL-SPEC · Electronic Components
CR37/U128K0000
Crystal Unit, Quartz
Part NumberCR37/U128K0000
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5955-00-813-6397 (NSN)
Federal Item NameCRYSTAL UNIT,QUARTZ
Federal Supply Class5955 — Crystals and Oscillators
Overall Width0.757 INCHES MAXIMUM
Load Capacitance In Picofarads20.0 NOMINAL AND 19.5 MINIMUM AND 20.5 MAXIMUM
Terminal Length0.223 INCHES MINIMUM AND 0.238 INCHES MAXIMUM
Mode Of OscillationFUNDAMENTAL
Drive Level Rating2.0 MILLIWATTS NOMINAL AND 1.6 MILLIWATTS MINIMUM AND 2.4 MILLIWATTS MAXIMUM
Center To Center Distance Between0.478 INCHES MINIMUM AND 0.486 INCHES MAXIMUM
Test Data Document81349-MILC3098 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA
Equivalent Resistance Value In Ohm5000.0 NOMINAL
Frequency Tolerance For Operating-0.020 TO 0.020
Style DesignatorOVAL BODY, PIN TERMINALS
Operating Temp Range-40.0 TO 70.0 CELSIUS
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 CR37/U128K0000 available?
We can source CR37/U128K0000 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 CR37/U128K0000 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If CR37/U128K0000 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 CR37/U128K0000?
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 CR37/U128K0000?
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.