Microsemi Corp. - Massachusetts · Electronic Components
STA7221
TRANSISTOR — NSN 5961-01-077-3991
Part NumberSTA7221
ManufacturerMicrosemi Corp. - Massachusetts
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-01-077-3991 (NSN)
Federal Item NameTRANSISTOR
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
Current Rating0.50 MILLIAMPERES MAXIMUM COLLECTOR CUTOFF CURRENT, DC, BASE OPEN
Terminals2 UNINSULATED WIRE LEAD
Mounting MethodTERMINAL
Overall Length0.125 INCHES MINIMUM
Overall Diameter0.470 INCHES MINIMUM AND 0.500 INCHES MAXIMUM
Internal ConfigurationJUNCTION CONTACT
Joint Electronic Device EngineerinTO-66
Power Rating Per Characteristic50.0 WATTS MAXIMUM TOTAL DEVICE DISSIPATION
Voltage Rating In Volts Per Charac4.0 MAXIMUM BASE TO EMITTER SATURATION VOLTAGE
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 STA7221 available?
We can source STA7221 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 STA7221 by Microsemi Corp. - Massachusetts obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If STA7221 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 STA7221?
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 STA7221?
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.