Northrop Grumman Systems Corporation · Electronic Components
990C451H21
Resistor, Variable, Wire Wound, Non
Part Number990C451H21
ManufacturerNorthrop Grumman Systems Corporation
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-00-596-2546 (NSN)
Federal Item NameRESISTOR,VARIABLE,WIRE WOUND,NON
Federal Supply Class5905 — Resistors
Body Length1.227 INCHES NOMINAL
Electrical Resistance Per Section1.647 KILOHMS SINGLE SECTION
Ambient Temp In Deg Celsius Per Se85.0 SINGLE SECTION
Mounting MethodCLAMP RING(S)
Terminal Type And Quantity3 TURRET
Temp Coefficient Of Resistance Wir-20.0 TO 20.0 SINGLE SECTION
Power Dissipation Rating Per Secti2.5 FREE AIR SINGLE SECTION
Resistance Tolerance Per Section I-1.0 TO 1.0 SINGLE SECTION
Terminal LocationLONGITUDINALLY POSITIONED ON THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED
Shaft Radial Play0.00300 INCHES
Undercut Width0.06200 INCHES NOMINAL
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 990C451H21 available?
We can source 990C451H21 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 990C451H21 by Northrop Grumman Systems Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 990C451H21 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 990C451H21?
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 990C451H21?
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.