Siliconix Incorporated · Electronic Components
U149
TRANSISTOR — NSN 5961-00-102-1320
Part NumberU149
ManufacturerSiliconix Incorporated
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-00-102-1320 (NSN)
Federal Item NameTRANSISTOR
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
Current Rating30.00 MILLIAMPERES MAXIMUM DRAIN CURRENT30.00 MILLIAMPERES MAXIMUM DRAIN CURRENT
Terminals3 UNINSULATED WIRE LEAD3 UNINSULATED WIRE LEAD
Mounting MethodTERMINALTERMINAL
Overall Length0.210 INCHES MAXIMUM0.210 INCHES MAXIMUM
Overall Diameter0.230 INCHES MAXIMUM0.230 INCHES MAXIMUM
Features ProvidedHERMETICALLY SEALED CASEHERMETICALLY SEALED CASE
Power Rating Per Characteristic0.3 WATTS MAXIMUM TOTAL POWER DISSIPATION0.3 WATTS MAXIMUM TOTAL POWER DISSIPATION
Terminal Length0.500 INCHES MINIMUM0.500 INCHES MINIMUM
Voltage Rating In Volts Per Charac20.0 MAXIMUM DRAIN TO GATE VOLTAGE AND 20.0 MAXIMUM DRAIN TO GATE VOLTAGE AND 20.0 MAXIMUM GATE TO SOURCE VOLTAGE20.0 MA
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 U149 available?
We can source U149 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 U149 by Siliconix Incorporated obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If U149 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 U149?
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 U149?
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.