MIL-SPEC · Electronic Components
RWR78S40R2FS
Resistor, Fixed, Wire Wound, Induct
Part NumberRWR78S40R2FS
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-01-202-2266 (NSN)
Federal Item NameRESISTOR,FIXED,WIRE WOUND,INDUCT
Federal Supply Class5905 — Resistors
Unpackaged Unit Weight12.0 GRAMS
Resistance Tolerance In Percent-1.000 TO 1.000
Criticality Code JustificationFEAT
Cubic Measure0.238 CUBIC INCHES
Ambient Temp At Full Rated Power25.0 CELSIUS
Body Diameter0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM
Inclosure TypeENCAPSULATED
Reliability Failure Rate Level In0.001
Terminal Length1.500 INCHES MINIMUM
Terminal TypeWIRE LEAD
Ambient Temp In Deg Celsius At Zer275.0
Cancelled NSN5905-01-120-6948 (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 RWR78S40R2FS available?
We can source RWR78S40R2FS 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 RWR78S40R2FS by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If RWR78S40R2FS 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 RWR78S40R2FS?
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 RWR78S40R2FS?
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.