Leonardo UK · Electronic Components
XT1242
TRANSISTOR — NSN 5961-01-131-6636
Part NumberXT1242
ManufacturerLeonardo UK
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-01-131-6636 (NSN)
Federal Item NameTRANSISTOR
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
Current Rating2.00 AMPERES MAXIMUM BASE CURRENT, DC AND 4.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC
Terminals1 CASE AND 2 PIN
Mounting MethodUNTHREADED HOLE(S)
Overall Length1.252 INCHES MAXIMUM
Overall Width0.700 INCHES MAXIMUM
Overall Height0.250 INCHES MINIMUM AND 0.340 INCHES MAXIMUM
Semiconductor MaterialSILICON
Mounting Facility Quantity2
Joint Electronic Device EngineerinTO-66
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 XT1242 available?
We can source XT1242 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 XT1242 by Leonardo UK obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If XT1242 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 XT1242?
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 XT1242?
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.