MIL-SPEC · Electronic Components
RWR71S3900FM
Resistor, Fixed, Wire Wound
Part NumberRWR71S3900FM
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-00-256-9794 (NSN)
Federal Item NameRESISTOR,FIXED,WIRE WOUND
Federal Supply Class5905 — Resistors
Temp Coefficient Of Resistance In-20.0 TO 20.0
Ambient Temp In Deg Celsius At Zer275.0
Temp Range Of Temp Coefficient In-55.0 TO 275.0
Reliability Failure Rate Level In1.000
Body Diameter0.187 INCHES NOMINAL
Terminal TypeWIRE LEAD
Power Dissipation Rating In Watts2.000 FREE AIR
Ambient Temp At Full Rated Power25.0 CELSIUS
Body Length0.812 INCHES NOMINAL
Reliability IndicatorESTABLISHED
Inclosure TypeENCAPSULATED
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 RWR71S3900FM available?
We can source RWR71S3900FM 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 RWR71S3900FM by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If RWR71S3900FM 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 RWR71S3900FM?
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 RWR71S3900FM?
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.