MIL-SPEC · Electronic Components
RER40F2R49R
Resistor, Fixed, Wire Wound, Nonind
Part NumberRER40F2R49R
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-01-079-4607 (NSN)
Federal Item NameRESISTOR,FIXED,WIRE WOUND,NONIND
Federal Supply Class5905 — Resistors
Electrical Resistance2.490 OHMS
Resistance Tolerance In Percent-1.000 TO 1.000
Body Width0.272 INCHES MINIMUM AND 0.396 INCHES MAXIMUM
Temp Range Of Temp Coefficient In-55.0 TO 275.0
Test Data Document81349-MIL-R-39009 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DA
Ambient Temp At Full Rated Power25.0 CELSIUS
Distance Between Centerlines Of Mo0.434 INCHES MINIMUM AND 0.454 INCHES MAXIMUM
Reactance CharacteristicNONINDUCTIVE
Style DesignatorAXIAL TERMINAL (S)
Mounting Hole Size0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM
Reliability Failure Rate Level In0.010
Cancelled NSN5905-00-112-1277 (cancelled)
ESD/EMICode A — 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 RER40F2R49R available?
We can source RER40F2R49R 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 RER40F2R49R by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If RER40F2R49R 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 RER40F2R49R?
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 RER40F2R49R?
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.