STMicroelectronics · Electronic Components
BUX48
TRANSISTOR POWER NPN TO-3
Part NumberBUX48
ManufacturerSTMicroelectronics
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-01-257-0508 (NSN)
Federal Item NameTRANSISTOR
Terminals2 PIN
Mounting MethodUNTHREADED HOLE(S)
Overall Length1.573 INCHES MAXIMUM
Overall Width1.050 INCHES MAXIMUM
Overall Height0.350 INCHES NOMINAL
Terminal Length0.312 INCHES MINIMUM
Voltage Rating In Volts Per Charac850.0 NOMINAL COLLECTOR TO EMITTER VOLTAGE, DC WITH SPECIFIED CIRCUIT BETWEEN BASE AND EMITTER AND 400.0 NOMINAL COLLECT
Maximum Operating Temp Per Measure200.0 CELSIUS AMBIENT AIR
Semiconductor MaterialSILICON
Mounting Facility Quantity2
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
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 BUX48 available?
We can source BUX48 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 BUX48 by STMicroelectronics obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If BUX48 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 BUX48?
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 BUX48?
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.