L3Harris Technologies, Inc. · Electronic Components
75549-3
Heat Sink, Electrical
Part Number75549-3
ManufacturerL3Harris Technologies, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5999-01-369-2736 (NSN)
Federal Item NameHEAT SINK,ELECTRICAL-ELECTRONIC
Federal Supply Class5999 — Miscellaneous Electrical Components
Overall Width1.810 INCHES NOMINAL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) FIRST MOUNTING FACILITY
Unthreaded Mounting Hole Diameter0.187 INCHES MINIMUM AND 0.193 INCHES MAXIMUM SECOND MOUNTING FACILITY
Body StyleBOARD MOUNTED
Thread Class2B FIRST MOUNTING FACILITY
Mounting Facility Type And Quantit2 THREADED HOLE(S) FIRST MOUNTING FACILITY
Overall Length1.810 INCHES NOMINAL
Nominal Thread Size0.112 INCHES FIRST MOUNTING FACILITY
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 75549-3 available?
We can source 75549-3 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 75549-3 by L3Harris Technologies, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 75549-3 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 75549-3?
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 75549-3?
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.