MIL-SPEC · Electronic Components
CR38/U40K20000
Crystal Unit, Quartz
Part NumberCR38/U40K20000
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5955-00-973-6239 (NSN)
Federal Item NameCRYSTAL UNIT,QUARTZ
Federal Supply Class5955 — Crystals and Oscillators
Style DesignatorTUBE BODY, WIRE LEADS
Terminal Diameter0.048 INCHES MINIMUM AND 0.052 INCHES MAXIMUM
Test Data Document81349-MIL-C-3098/38 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE
MaterialGLASS COVER HOLDER
Drive Level Rating0.10 MILLIWATTS NOMINAL AND 0.08 MILLIWATTS MINIMUM AND 0.12 MILLIWATTS MAXIMUM
Equivalent Resistance Value In Ohm110000.0 MAXIMUM
Frequency Tolerance For Operating-0.012 TO 0.012 AND -0.050 TO 0.050
Center To Center Distance Between0.478 INCHES MINIMUM AND 0.494 INCHES MAXIMUM
Load Capacitance In Picofarads20.0 NOMINAL AND 19.5 MINIMUM AND 20.5 MAXIMUM
Operating Temp Range-40.0 TO 70.0 CELSIUS
Specified Frequency40.200 KILOHERTZ
Cancelled NSN5955-01-434-7011 (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 CR38/U40K20000 available?
We can source CR38/U40K20000 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 CR38/U40K20000 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If CR38/U40K20000 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 CR38/U40K20000?
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 CR38/U40K20000?
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.