Siliconix Incorporated · Electronic Components
FN4937
TRANSISTOR — NSN 5961-01-364-1224
Part NumberFN4937
ManufacturerSiliconix Incorporated
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-01-364-1224 (NSN)
Federal Item NameTRANSISTOR
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
Current Rating-150.00 MICROAMPERES MAXIMUM REVERSE GATE CURRENT WITH ALL OTHER TERMINALS SHORT-CIRCUIT TO SOURCE, JUNCTION-GATE AND 20
Terminals4 UNINSULATED WIRE LEAD
Mounting MethodTERMINAL
Overall Length0.170 INCHES MINIMUM AND 0.210 INCHES MAXIMUM
Overall Diameter0.209 INCHES MINIMUM AND 0.230 INCHES MAXIMUM
Voltage Rating In Volts Per Charac-25.0 MINIMUM FORWARD GATE TO SOURCE BREAKDOWN VOLTAGE AND -1.0 MINIMUM GATE TO SOURCE CUTOFF VOLTAGE AND -6.0 MAXIMUM G
Maximum Operating Temp Per Measure200.0 CELSIUS JUNCTION
Features ProvidedHERMETICALLY SEALED CASE
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 FN4937 available?
We can source FN4937 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 FN4937 by Siliconix Incorporated obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If FN4937 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 FN4937?
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 FN4937?
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.