Semiconductor Technology, Inc. · Electronic Components
ST-12021
TRANSISTOR — NSN 5961-01-298-4383
Part NumberST-12021
ManufacturerSemiconductor Technology, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-01-298-4383 (NSN)
Federal Item NameTRANSISTOR
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
Current Rating8.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 2.50 MILLIAMPERES MAXIMUM COLLECTOR CUTOFF CURRENT, DC, EMITTER OPEN
Terminals1 CASE AND 2 PIN
Mounting MethodUNTHREADED HOLE(S)
Overall Length1.563 INCHES MAXIMUM
Overall Width0.820 INCHES NOMINAL
Overall Height0.275 INCHES NOMINAL
Power Rating Per Characteristic150.0 WATTS MAXIMUM TOTAL DEVICE DISSIPATION
Transfer Ratio5.0 MINIMUM STATIC FORWARD CURRENT TRANSFER RATIO, COMMON-EMITTER
Voltage Rating In Volts Per Charac450.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 850.0 MAXIMUM COLLECTOR-TO-EMITTER, WITH VOLTAGE BETWEEN
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 ST-12021 available?
We can source ST-12021 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 ST-12021 by Semiconductor Technology, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If ST-12021 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 ST-12021?
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 ST-12021?
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.