Lockheed Martin Librascope · Electronic Components
L503001543
Relay, Electromagnetic
Part NumberL503001543
ManufacturerLockheed Martin Librascope
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-00-839-7892 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Time Delay0.005 SECONDS MAXIMUM FIXED OPERATE TIME
Winding Dc Resistance Rating500.0 OHMS NOMINAL SINGLE WINDING
Operating Voltage Rating And Type26.5 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Cubic Measure0.784 CUBIC INCHES
Nonpile Up Main Contact Arrangemen4 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Center To Center Distance Between1.200 INCHES NOMINAL SINGLE MOUNTING FACILITY
Environmental ProtectionSHOCK RESISTANT AND VIBRATION RESISTANT
Features ProvidedCOIL VOLTAGE SUPPRESSION
Overall Length1.415 INCHES MAXIMUM
Main Contact Maximum Voltage Ratin115.0 AC AND 28.0 DC
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Vendor Part Numbers2548661
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 L503001543 available?
We can source L503001543 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 L503001543 by Lockheed Martin Librascope obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If L503001543 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 L503001543?
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 L503001543?
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.