Tdk-Lambda Americas Inc. · Electronic Components
QM4021CW
Power Supply
Part NumberQM4021CW
ManufacturerTdk-Lambda Americas Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN6120-01-721-0521 (NSN)
Federal Item NamePOWER SUPPLY
Federal Supply Class6120 — Transformers: Distribution and Power
Overall Height2.490 INCHES NOMINAL
Overall Length10.630 INCHES NOMINAL
Overall Width4.250 INCHES NOMINAL
ESD/EMICode A — ESD/EMI sensitive item
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 QM4021CW available?
We can source QM4021CW 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 QM4021CW by Tdk-Lambda Americas Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If QM4021CW 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 QM4021CW?
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 QM4021CW?
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.