Semitronics Corp. · Electronic Components
2N3643
TRANSISTOR — NSN 5961-00-978-9667
Part Number2N3643
ManufacturerSemitronics Corp.
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-00-978-9667 (NSN)
Federal Item NameTRANSISTOR
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
MaterialPLASTIC ENCLOSURE
Current Rating500.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
Terminals3 UNINSULATED WIRE LEAD
Mounting MethodTERMINAL
Overall Length0.250 INCHES NOMINAL
Overall Diameter0.330 INCHES NOMINAL
Special FeaturesJUNCTION PATTERN ARRANGEMENT: NPN
Semiconductor MaterialSILICON
Internal ConfigurationJUNCTION CONTACT
Inclosure TypeFULLY INCLOSED
Actuator Roller Width0.156 INCHES NOMINAL
Body Width0.688 INCHES NOMINAL
Unthreaded Mounting Hole Diameter0.140 INCHES NOMINAL
Actuator StyleROLLER ARM
Hazardous Locations EnvironmentalDUSTPROOF
Nonpile Up Contact Arrangement1 POLE, DOUBLE THROW, BOTH POSITIONS MAINTAINED SINGLE SWITCH UNIT
Criticality Code JustificationFEAT
Switch Release Force0.7 OUNCES MINIMUM
Contact Load Current Rating At Max5.000 AMPERES RESISTIVE AC
Terminal Type And Quantity3 SCREW
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 2N3643 available?
We can source 2N3643 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 2N3643 by Semitronics Corp. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 2N3643 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 2N3643?
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 2N3643?
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.