Xsis Electronics Inc. · Electronic Components
148991-1
Oscillator, Crystal Controlled
Part Number148991-1
ManufacturerXsis Electronics Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5955-01-156-8873 (NSN)
Federal Item NameOSCILLATOR,CRYSTAL CONTROLLED
Federal Supply Class5955 — Crystals and Oscillators
Overall Length0.875 INCHES MAXIMUM
External Dc Operating Voltage In V5.0 MINIMUM SINGLE VOLTAGE AND 12.0 MAXIMUM SINGLE VOLTAGE
Connection Contact Type And Quanti14 PRINTED CIRCUIT EXTERNAL
Shock Pulse Duration Time1.0 MILLISECONDS
Overall Gain5.0 MILLIAMPERES AND 12.0 MILLIAMPERES
Average Life MeasurementNOT RATED
Overall Height0.425 INCHES NOMINAL
Vibration Resistance Amplitude50.0 GRAVITATIONAL UNITS
Environmental ProtectionSHOCK RESISTANT AND VIBRATION
Frequency Per Channel4.0 MEGAHERTZ NOMINAL OUTPUT CHANNEL
Connection TypePRINTED CIRCUIT BOTTOM
Vendor Part NumbersX243-4.0MHZ
Cancelled NSN5955-01-176-7278 (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 148991-1 available?
We can source 148991-1 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 148991-1 by Xsis Electronics Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 148991-1 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 148991-1?
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 148991-1?
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.