Hensoldt UK · Electronic Components
40-666-5161
TRANSISTOR — NSN 5961-00-904-2021
Part Number40-666-5161
ManufacturerHensoldt UK
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-00-904-2021 (NSN)
Federal Item NameTRANSISTOR
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
Current Rating4.00 AMPERES MAXIMUM BASE CURRENT, DC AND 10.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC
Terminals2 UNINSULATED WIRE LEAD AND 1 CASE
Mounting MethodUNTHREADED HOLE(S)
Overall Length0.375 INCHES MAXIMUM
Overall Height0.450 INCHES MAXIMUM
Overall Diameter0.875 INCHES MAXIMUM
Power Rating Per Characteristic150.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION
Maximum Operating Temp Per Measure200.0 CELSIUS JUNCTION
Internal Junction ConfigurationPNP
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 40-666-5161 available?
We can source 40-666-5161 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 40-666-5161 by Hensoldt UK obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 40-666-5161 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 40-666-5161?
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 40-666-5161?
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.