STMicroelectronics Inc. · Electronic Components
SD1540-25
TRANSISTOR — NSN 5961-01-365-5028
Part NumberSD1540-25
ManufacturerSTMicroelectronics Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-01-365-5028 (NSN)
Federal Item NameTRANSISTOR
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
Current Rating22.00 AMPERES NOMINAL COLLECTOR CURRENT, DC
Terminals2 RIBBON AND 1 CASE
Mounting MethodSLOT
Overall Length0.889 INCHES MINIMUM AND 0.909 INCHES MAXIMUM
Overall Width0.710 INCHES MINIMUM
Overall Height0.185 INCHES MAXIMUM
Special FeaturesJUNCTION PATTERN ARRANGEMENT: NPN
Internal ConfigurationJUNCTION CONTACT
Power Rating Per Characteristic875.0 WATTS MAXIMUM TOTAL POWER DISSIPATION
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 SD1540-25 available?
We can source SD1540-25 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 SD1540-25 by STMicroelectronics Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If SD1540-25 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 SD1540-25?
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 SD1540-25?
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.