NAVAIR/NAVSEA Design Activity · Electronic Components
63A6A1-55901B21
Resistor, Fixed, Wire Wound
Part Number63A6A1-55901B21
ManufacturerNAVAIR/NAVSEA Design Activity
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-00-901-7998 (NSN)
Federal Item NameRESISTOR,FIXED,WIRE WOUND
Federal Supply Class5905 — Resistors
Electrical Resistance55.900 KILOHMS
Style DesignatorAXIAL TERMINAL EACH END
Body Diameter0.156 INCHES MAXIMUM
Terminal TypeWIRE LEAD
Power Dissipation Rating In Watts0.050 FREE AIR
Body Length0.281 INCHES MAXIMUM
Inclosure TypeENCAPSULATED
Ambient Temp At Full Rated Power125.0 CELSIUS
Reliability Failure Rate Level In0.100
Reliability IndicatorESTABLISHED
Temp Range Of Temp Coefficient In+26.0 TO 145.0
Vendor Part NumbersHR41-559010HMS, 5S8A-559010HMS, R1104-559010HMS
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 63A6A1-55901B21 available?
We can source 63A6A1-55901B21 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 63A6A1-55901B21 by NAVAIR/NAVSEA Design Activity obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 63A6A1-55901B21 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 63A6A1-55901B21?
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 63A6A1-55901B21?
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.