Sigma Tek, Inc. · Electronic Components
20639
Oscillator, Crystal Controlled
Part Number20639
ManufacturerSigma Tek, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5955-00-623-7271 (NSN)
Federal Item NameOSCILLATOR,CRYSTAL CONTROLLED
Federal Supply Class5955 — Crystals and Oscillators
Control TypeLOCAL
Frequency Per Channel190.0 MEGAHERTZ NOMINAL OPERATING CHANNEL
Inclosure TypeENCASED
Overall Height0.719 INCHES NOMINAL
FSC Application DataRADIO NAVIGATION EQUIPMENT AIRBORNE
Operating Control MethodMANUAL
Overall Width1.032 INCHES NOMINAL
External Dc Operating Voltage In V60.0 NOMINAL SINGLE VOLTAGE
Overall Length1.719 INCHES NOMINAL
Basic Shape StyleIRREGULAR
ESD/EMICode B — ESD/EMI sensitive item
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 20639 available?
We can source 20639 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 20639 by Sigma Tek, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 20639 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 20639?
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 20639?
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.