Littelfuse · Electronic Components
Q4010L4
TRIAC ISOLATED 400V 10A TO-220AB
Part NumberQ4010L4
ManufacturerLittelfuse
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-00-172-3005 (NSN)
Federal Item NameSEMICONDUCTOR DEVICE,THYRISTOR
Current Rating45.00 MILLIAMPERES MAXIMUM HOLDING CURRENT, DC
Terminals3 UNINSULATED WIRE LEAD
Mounting MethodTERMINAL
Overall Length0.350 INCHES MAXIMUM
Overall Diameter0.380 INCHES MAXIMUM
Features ProvidedHERMETICALLY SEALED CASE
Special FeaturesINTERNAL JUNCTION CONFIGURATION, NPN
Terminal Length0.573 INCHES MINIMUM
Internal ConfigurationJUNCTION CONTACT
Maximum Operating Temp Per Measure80.0 CELSIUS CASE
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
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 Q4010L4 available?
We can source Q4010L4 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 Q4010L4 by Littelfuse obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If Q4010L4 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 Q4010L4?
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 Q4010L4?
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.