Semiconductor Technology, Inc. · Electronic Components
ST-4645
TRANSISTOR — NSN 5961-01-108-9526
Part NumberST-4645
ManufacturerSemiconductor Technology, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-01-108-9526 (NSN)
Federal Item NameTRANSISTOR
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
Current Rating500.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
Terminals3 UNINSULATED WIRE LEAD
Mounting MethodTERMINAL
Overall Length0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
Overall Diameter0.315 INCHES MINIMUM AND 0.335 INCHES MAXIMUM
Special FeaturesJUNCTION PATTERN ARRANGEMENT: PNP
Electrode Internally ElectricallyCOLLECTOR
Voltage Rating In Volts Per Charac200.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COL
Semiconductor MaterialSILICON
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-4645 available?
We can source ST-4645 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-4645 by Semiconductor Technology, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If ST-4645 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-4645?
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-4645?
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.