Lockheed Martin Corporation · Electronic Components
631800-3
Relay, Thermal
Part Number631800-3
ManufacturerLockheed Martin Corporation
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-00-019-0875 (NSN)
Federal Item NameRELAY,THERMAL
Federal Supply Class5945 — Relays and Solenoids
Delay Time In Seconds2.5 FIXED OPERATE NOMINAL
Contact Maximum Current Rating In3.0 AC OR 1.0 DC
Environmental ProtectionDUSTPROOF
Overall Height2.375 INCHES NOMINAL
Heater Voltage Rating In Volts28.0
Contact ArrangementSINGLE POLE, SINGLE THROW, NORMALLY OPEN
Contact Maximum Voltage Rating In115.0 AC AND 28.0 DC
Heater Power Rating In Watts4.0
Overall Length1.375 INCHES NOMINAL
Mounting Facility Type And Quantit2 UNTHREADED HOLE(S)
Terminal Type And Quantity4 PIN
Cancelled NSN5945-00-704-6142 (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 631800-3 available?
We can source 631800-3 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 631800-3 by Lockheed Martin Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 631800-3 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 631800-3?
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 631800-3?
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.