Autodyne Manufacturing · Electronic Components
A11278
Heat Sink, Electrical
Part NumberA11278
ManufacturerAutodyne Manufacturing
AvailabilityAvailable to order — request a quote
Specifications
NSN5999-01-301-2625 (NSN)
Federal Item NameHEAT SINK,ELECTRICAL-ELECTRONIC
Federal Supply Class5999 — Miscellaneous Electrical Components
Overall Length2.930 INCHES NOMINAL
Mounting Facility Type And Quantit2 UNTHREADED STUD THIRD MOUNTING FACILITY
Unthreaded Mounting Hole Diameter0.124 INCHES MAXIMUM AND 0.129 INCHES MAXIMUM SECOND MOUNTING FACILITY
Surface TreatmentCHROMATE
Surface Treatment Document And ClaMIL-C-5541,CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE
Overall Height1.000 INCHES NOMINAL
Overall Width1.700 INCHES NOMINAL
MaterialALUMINUM ALLOY
Vendor Part NumbersSM-C-911740
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 A11278 available?
We can source A11278 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 A11278 by Autodyne Manufacturing obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If A11278 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 A11278?
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 A11278?
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.