Mersen USA SPM · Electronic Components
ATMR20
Fuse, Cartridge
Part NumberATMR20
ManufacturerMersen USA SPM
AvailabilityAvailable to order — request a quote
Specifications
NSN5920-01-690-5443 (NSN)
Federal Item NameFUSE,CARTRIDGE
Federal Supply Class5920 — Fuses and Lightning Arresters
Continuous Current Rating In Amps20.0
Features ProvidedNONRENEWABLE FUSIBLE ELEMENT
Interruption Indicator MethodNO VISUAL INDICATION
Overall Length1.50 INCHES NOMINAL
Body StyleTUBE TYPE
Circuit Over Current InterruptionNORMAL INSTANTANEOUS
Overall Diameter0.4063 INCHES NOMINAL
Maximum Voltage Rating In Volts600.0 AC
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 ATMR20 available?
We can source ATMR20 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 ATMR20 by Mersen USA SPM obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If ATMR20 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 ATMR20?
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 ATMR20?
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.