Bourns · Electronic Components
MF-R040
FUSE PTC RESETTABLE .4A HOLD
Part NumberMF-R040
ManufacturerBourns
AvailabilityAvailable to order — request a quote
Specifications
NSN5920-01-736-1637 (NSN)
Federal Item NameFUSE,ENCLOSED LINK
Overall Length7.4 MILLIMETERS NOMINAL
Overall Width3.1 MILLIMETERS NOMINAL
Body StyleRECTANGULAR PLUG-IN
Circuit Over Current InterruptionNORMAL INSTANTANEOUS
Continuous Current Rating In Amps40.0
Interruption Indicator MethodNO VISUAL INDICATION
Maximum Voltage Rating In Volts60.0 DC
Federal Supply Class5920 — Fuses, Arrestors, Absorbers, And Protectors
Vendor Part Numbers352250050439
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 MF-R040 available?
We can source MF-R040 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 MF-R040 by Bourns obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If MF-R040 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 MF-R040?
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 MF-R040?
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.