Varian Associates Inc. Communications Transistor Div · Electronic Components
CD3681
TRANSISTOR — NSN 5961-01-082-8328
Part NumberCD3681
ManufacturerVarian Associates Inc. Communications Transistor Div
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-01-082-8328 (NSN)
Federal Item NameTRANSISTOR
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
MaterialCERAMIC ENCLOSURE
Current Rating2.50 AMPERES MAXIMUM COLLECTOR CURRENT, DC
Terminals4 TAB, SOLDER LUG
Mounting MethodTHREADED STUD(S)
Overall Length0.280 INCHES MAXIMUM
Mounting Facility Quantity1
Power Rating Per Characteristic25.0 WATTS MAXIMUM TOTAL POWER DISSIPATION
Nominal Thread Size0.164 INCHES
Semiconductor MaterialSILICON
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 CD3681 available?
We can source CD3681 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 CD3681 by Varian Associates Inc. Communications Transistor Div obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If CD3681 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 CD3681?
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 CD3681?
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.