MIL-SPEC · Electronic Components
RBR57L12803AR
Resistor, Fixed, Wire Wound
Part NumberRBR57L12803AR
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-01-256-9336 (NSN)
Federal Item NameRESISTOR,FIXED,WIRE WOUND
Federal Supply Class5905 — Resistors
Resistance Tolerance In Percent-0.050 TO 0.050
Ambient Temp At Full Rated Power125.0 CELSIUS
Reactance CharacteristicNONINDUCTIVE
Power Dissipation Rating In Watts0.750 FREE AIR
Temp Range Of Temp Coefficient In-65.0 TO 145.0
Body Length1.000 INCHES NOMINAL
Inclosure TypeENCAPSULATED
Ambient Temp In Deg Celsius At Zer145.0
Terminal TypeWIRE LEAD
Terminal Length1.500 INCHES MINIMUM
Reliability Failure Rate Level In0.010
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 RBR57L12803AR available?
We can source RBR57L12803AR 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 RBR57L12803AR by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If RBR57L12803AR 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 RBR57L12803AR?
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 RBR57L12803AR?
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.