Tdk Electronics Ag · Electronic Components
RB4
Relay, Electromagnetic
Part NumberRB4
ManufacturerTdk Electronics Ag
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-00-909-7749 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Winding Dc Resistance Rating32.0 OHMS NOMINAL SINGLE WINDING
Time Delay0.01 SECONDS MAXIMUM FIXED RELEASE TIME
Features ProvidedPOLARIZED
Cubic Measure10.447 CUBIC INCHES
Winding Quantity1
Fragility FactorMODERATELY RUGGED
Thread Class2A SINGLE MOUNTING FACILITY
Terminal Type And Quantity14 TAB, SOLDER LUG ALL FUNCTIONS
MaterialGLASS CASE
Thread DirectionRIGHT-HAND SINGLE MOUNTING FACILITY
Overall Length4.060 INCHES MAXIMUM
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 RB4 available?
We can source RB4 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 RB4 by Tdk Electronics Ag obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If RB4 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 RB4?
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 RB4?
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.