Infineon Technologies Americas · Electronic Components
IRFF121
TRANSISTOR — NSN 5961-01-261-1947
Part NumberIRFF121
ManufacturerInfineon Technologies Americas
AvailabilityAvailable to order — request a quote
Specifications
NSN5961-01-261-1947 (NSN)
Federal Item NameTRANSISTOR
Federal Supply Class5961 — Semiconductor Devices And Associated Hardware
Current Rating6.00 AMPERES NOMINAL DRAIN CURRENT
Overall Diameter0.360 INCHES NOMINAL
Joint Electronic Device EngineerinTO-205AF(TO-39)
Voltage Rating In Volts Per Charac60.0 NOMINAL DRAIN TO SOURCE VOLTAGE AND 60.0 NOMINAL DRAIN TO GATE VOLTAGE
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 IRFF121 available?
We can source IRFF121 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 IRFF121 by Infineon Technologies Americas obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If IRFF121 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 IRFF121?
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 IRFF121?
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.