Lockheed Martin Corporation · Electronic Components
728778
Resistor, Fixed, Wire Wound
Part Number728778
ManufacturerLockheed Martin Corporation
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-00-259-5047 (NSN)
Federal Item NameRESISTOR,FIXED,WIRE WOUND
Federal Supply Class5905 — Resistors
Inclosure TypeENCAPSULATED
Terminal Length1.375 INCHES MINIMUM AND 1.625 INCHES MAXIMUM
Power Dissipation Rating In Watts18.000 FREE AIR
Terminal TypeWIRE LEAD
Body Width0.765 INCHES MINIMUM AND 0.797 INCHES MAXIMUM
Body Height0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM
Ambient Temp At Full Rated Power25.0 CELSIUS
Reliability IndicatorNOT ESTABLISHED
Body Length1.390 INCHES MINIMUM AND 1.423 INCHES MAXIMUM
Cubic Measure0.337 CUBIC INCHES
Ambient Temp In Deg Celsius At Zer325.0
Vendor Part NumbersK43581
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 728778 available?
We can source 728778 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 728778 by Lockheed Martin Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 728778 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 728778?
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 728778?
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.