MIL-SPEC · Electronic Components
RBR56L37R40TR
Resistor, Fixed, Wire Wound
Part NumberRBR56L37R40TR
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-01-445-0805 (NSN)
Federal Item NameRESISTOR,FIXED,WIRE WOUND
Federal Supply Class5905 — Resistors
Inclosure TypeENCAPSULATED
Body Length0.263 INCHES MINIMUM AND 0.315 INCHES MAXIMUM
Body Diameter0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM
Reliability IndicatorESTABLISHED
Ambient Temp At Full Rated Power125.0 CELSIUS
Reliability Failure Rate Level In0.010
Terminal TypeWIRE LEAD
Power Dissipation Rating In Watts0.125 FREE AIR
Ambient Temp In Deg Celsius At Zer145.0
Electrical Resistance37.400 OHMS
Resistance Tolerance In Percent-0.010 TO 0.010
Cancelled NSN5905-01-232-5049 (cancelled)
ESD/EMICode B — ESD/EMI sensitive item
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 RBR56L37R40TR available?
We can source RBR56L37R40TR 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 RBR56L37R40TR by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If RBR56L37R40TR 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 RBR56L37R40TR?
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 RBR56L37R40TR?
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.