Mersen USA Ep · Electronic Components
OT90
Fuse, Cartridge
Part NumberOT90
ManufacturerMersen USA Ep
AvailabilityAvailable to order — request a quote
Specifications
NSN5920-00-553-6454 (NSN)
Federal Item NameFUSE,CARTRIDGE
Federal Supply Class5920 — Fuses and Lightning Arresters
Body StyleKNIFE BLADE TYPE
Nondefinitive Spec Std Data1 TYPE AND A STYLE AND 1 CLASS
Continuous Current Rating In Amps90.000
Interruption Indicator MethodOPAQUE BODY
Maximum Voltage Rating In Volts250.0 DC
Terminal Thickness0.125 INCHES NOMINAL
Features ProvidedNONRENEWABLE FUSIBLE ELEMENT
Circuit Over Current InterruptionNORMAL INSTANTANEOUS
MaterialFIBER CASE
Terminal Length1.000 INCHES NOMINAL
Overall Diameter1.312 INCHES MAXIMUM
Vendor Part NumbersN0N90
Cancelled NSN5920-00-557-2650 (cancelled)
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 OT90 available?
We can source OT90 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 OT90 by Mersen USA Ep obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If OT90 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 OT90?
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 OT90?
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.