Semiconductor Technology, Inc. · Electronic Components
MJ400
TRANSISTOR — NSN 5961-00-166-3540
Part NumberMJ400
ManufacturerSemiconductor Technology, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-00-166-3540 (NSN)
Federal Item NameTRANSISTOR
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
Current Rating200.00 MILLIAMPERES MAXIMUM BASE CURRENT, DC AND 250.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
Terminals2 UNINSULATED WIRE LEAD AND 1 CASE
Mounting MethodUNTHREADED HOLE(S)
Overall Length1.252 INCHES MAXIMUM
Overall Diameter0.620 INCHES MAXIMUM
Features ProvidedHERMETICALLY SEALED CASE
Power Rating Per Characteristic6.7 WATTS MAXIMUM TOTAL DEVICE DISSIPATION
Internal ConfigurationJUNCTION CONTACT
Mounting Facility Quantity2
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 MJ400 available?
We can source MJ400 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 MJ400 by Semiconductor Technology, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If MJ400 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 MJ400?
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 MJ400?
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.