Microsemi Corp. - High Performance Timing · Electronic Components
591-18B
Crystal Unit, Quartz
Part Number591-18B
ManufacturerMicrosemi Corp. - High Performance Timing
AvailabilityAvailable to order — request a quote
Specifications
NSN5955-00-928-5581 (NSN)
Federal Item NameCRYSTAL UNIT,QUARTZ
Federal Supply Class5955 — Crystals and Oscillators
Overall Length0.991 INCHES NOMINAL
Terminal Length0.241 INCHES NOMINAL
Terminal Diameter0.050 INCHES NOMINAL
Center To Center Distance Between0.500 INCHES NOMINAL
Body Length0.750 INCHES NOMINAL
Style DesignatorOVAL BODY, PIN TERMINALS
Overall Thickness0.312 INCHES NOMINAL
Specified Frequency634.000 MEGAHERTZ
Overall Width0.750 INCHES NOMINAL
Vendor Part Numbers2088591-11
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 591-18B available?
We can source 591-18B 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 591-18B by Microsemi Corp. - High Performance Timing obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 591-18B 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 591-18B?
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 591-18B?
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.