Littelfuse · Electronic Components
V421DA40
VARISTOR INDUST 420V 600J DA
Part NumberV421DA40
ManufacturerLittelfuse
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-01-409-1942 (NSN)
Federal Item NameRESISTOR,VOLTAGE SENSITIVE
Federal Supply Class5905 — Resistor
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 V421DA40 available?
We can source V421DA40 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 V421DA40 by Littelfuse obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If V421DA40 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 V421DA40?
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 V421DA40?
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.