Semelab Limited · Electronic Components
BUX51
TRANSISTOR — NSN 5961-01-340-9214
Part NumberBUX51
ManufacturerSemelab Limited
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-01-340-9214 (NSN)
Federal Item NameTRANSISTOR
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
Current Rating3.50 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 700.00 MILLIAMPERES MAXIMUM BASE CURRENT, DC
Terminals3 UNINSULATED WIRE LEAD
Mounting MethodTERMINAL
Overall Length0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
Overall Diameter0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM
Voltage Rating In Volts Per Charac300.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 200.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITT
Features ProvidedHERMETICALLY SEALED CASE
Terminal Length0.500 INCHES MINIMUM
Internal ConfigurationJUNCTION CONTACT
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 BUX51 available?
We can source BUX51 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 BUX51 by Semelab Limited obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If BUX51 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 BUX51?
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 BUX51?
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.