Leach International · Electronic Components
TD901-40S
Relay, Electromagnetic
Part NumberTD901-40S
ManufacturerLeach International
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-00-498-3502 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Environmental ProtectionDUSTPROOF
Duty TypeCONTINUOUS
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Overall Length2.250 INCHES MAXIMUM
Mounting Facility Type And Quantit4 THREADED STUD(S) SINGLE MOUNTING FACILITY
Time Delay5.00 SECONDS MAXIMUM FIXED OPERATE AND RELEASE TIME
Features ProvidedPOLARIZED
Center To Center Distance Between1.187 INCHES NOMINAL SINGLE MOUNTING FACILITY
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Nominal Thread Size0.138 INCHES SINGLE MOUNTING FACILITY
Thread Class2A SINGLE MOUNTING FACILITY
Vendor Part NumbersGR835J540
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 TD901-40S available?
We can source TD901-40S 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 TD901-40S by Leach International obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If TD901-40S 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 TD901-40S?
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 TD901-40S?
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.