DRI Relays · Electronic Components
56SD18A
Relay, Electromagnetic
Part Number56SD18A
ManufacturerDRI Relays
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-00-665-7513 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Main Contact Maximum Voltage Ratin115.0 AC AND 26.0 DC
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Environmental ProtectionHERMETIC
Overall Height1.660 INCHES NOMINAL
Winding Dc Resistance Rating630.0 OHMS MINIMUM AND 770.0 OHMS MAXIMUM SINGLE WINDING
Nominal Thread Size0.138 INCHES SINGLE MOUNTING FACILITY
Coil Quantity1
Overall Width1.280 INCHES NOMINAL
Operating Voltage Rating And Type48.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Pile Up Main Contact Form Arrangem6C
Vendor Part NumbersG-243149
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 56SD18A available?
We can source 56SD18A 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 56SD18A by DRI Relays obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 56SD18A 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 56SD18A?
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 56SD18A?
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.