Siliconix Incorporated · Electronic Components
SI9953DY
TRANSISTOR — NSN 5961-01-481-3934
Part NumberSI9953DY
ManufacturerSiliconix Incorporated
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-01-481-3934 (NSN)
Federal Item NameTRANSISTOR
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
MaterialCERAMIC ENCLOSURE
Current Rating-2.30 AMPERES MINIMUM DRAIN CURRENT AND 2.30 AMPERES MAXIMUM DRAIN CURRENT
Terminals8 BEAM LEAD
Mounting MethodTERMINAL
Overall Length0.189 INCHES MINIMUM AND 0.197 INCHES MAXIMUM
Overall Width0.228 INCHES MINIMUM AND 0.244 INCHES MAXIMUM
Overall Height0.053 INCHES MINIMUM AND 0.069 INCHES MAXIMUM
Voltage Rating In Volts Per Charac20.0 MAXIMUM GATE TO SOURCE CUTOFF VOLTAGE
Overall Width Across Flats0.149 INCHES MINIMUM AND 0.157 INCHES MAXIMUM
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 SI9953DY available?
We can source SI9953DY 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 SI9953DY by Siliconix Incorporated obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If SI9953DY 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 SI9953DY?
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 SI9953DY?
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.