Littelfuse · Electronic Components
312-300
Fuse, Cartridge
Part Number312-300
ManufacturerLittelfuse
LifecycleStocked
AvailabilityAvailable to order — request a quote
Specifications
NSN5920-00-577-2578 (NSN)
Federal Item NameFUSE,CARTRIDGE
Federal Supply Class5920 — Fuses and Lightning Arresters
Continuous Current Rating In Amps0.300
Overall Length1.250 INCHES NOMINAL
Features ProvidedNONRENEWABLE FUSIBLE ELEMENT
Maximum Voltage Rating In Volts250.0 DC
Overall Diameter0.250 INCHES NOMINAL
Circuit Over Current InterruptionNORMAL INSTANTANEOUS
MaterialGLASS CASE
Interruption Indicator MethodVISIBLE ELEMENT
Body StyleTUBE TYPE
Surface TreatmentNICKEL TERMINAL
Cancelled NSN5920-00-636-0143 (cancelled)
RohscompliantYES
Connector Body StyleStraight Flanged Jack
Hazardousfalse
RohsphthalatescompliantYES
Frequency Max11 GHz
Contact PlatingGold Plated Contacts
Impedance50 ohm
Product Range-
IscanonicalY
SvhcLead
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 312-300 available?
We can source 312-300 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 312-300 by Littelfuse obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 312-300 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 312-300?
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 312-300?
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.