Littelfuse · Electronic Components
R451003
FUSE,CARTRIDGE — NSN 5920-01-518-8939
Part NumberR451003
ManufacturerLittelfuse
AvailabilityAvailable to order — request a quote
Specifications
NSN5920-01-518-8939 (NSN)
Federal Item NameFUSE,CARTRIDGE
Special FeaturesNANO 2 FUSE; 0.0227 NOMINAL RESISTANCE COLD OHMS; SURFACE MOUNT
Maximum Voltage Rating In Volts125.0 AC AND 125.0 DC
Continuous Current Rating In Amps3.000
Federal Supply Class5920 — Fuses, Arrestors, Absorbers, And Protectors
Vendor Part NumbersPS231988-04
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 R451003 available?
We can source R451003 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 R451003 by Littelfuse obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If R451003 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 R451003?
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 R451003?
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.