Microsemi Corp. - Massachusetts · Electronic Components
PK4478
TRANSISTOR — NSN 5961-01-439-2392
Part NumberPK4478
ManufacturerMicrosemi Corp. - Massachusetts
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-01-439-2392 (NSN)
Federal Item NameTRANSISTOR
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
MaterialCERAMIC ENCLOSURE
Current Rating50.00 MILLIAMPERES MAXIMUM DRAIN CURRENT
Terminals16 CASE
Mounting MethodCOMPRESSION
Overall Length0.180 INCHES NOMINAL
Overall Width0.180 INCHES NOMINAL
Overall Height0.065 INCHES MAXIMUM
Semiconductor MaterialSILICON
Precious Material And LocationPLATED LEADS GOLD
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 PK4478 available?
We can source PK4478 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 PK4478 by Microsemi Corp. - Massachusetts obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If PK4478 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 PK4478?
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 PK4478?
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.