MIL-SPEC · Electronic Components
RB55CER2490D
Resistor, Fixed, Wire Wound
Part NumberRB55CER2490D
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-01-257-2010 (NSN)
Federal Item NameRESISTOR,FIXED,WIRE WOUND
Federal Supply Class5905 — Resistors
Electrical Resistance0.249 OHMS
Reactance CharacteristicNONINDUCTIVE
Body Length0.500 INCHES NOMINAL
Inclosure TypeENCAPSULATED
Terminal Length2.000 INCHES NOMINAL
Reliability IndicatorNOT ESTABLISHED
Power Dissipation Rating In Watts0.150 FREE AIR
Ambient Temp In Deg Celsius At Zer145.0
Terminal TypeWIRE LEAD
Temp Range Of Temp Coefficient In-65.0 TO 145.0
Ambient Temp At Full Rated Power125.0 CELSIUS
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 RB55CER2490D available?
We can source RB55CER2490D 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 RB55CER2490D by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If RB55CER2490D 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 RB55CER2490D?
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 RB55CER2490D?
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.