● ISO 9001:2015 · ANSI/ESD S20.20-2021 · ERAI Member · GIDEP · Woman-Owned Small Business 760.724.2800 · 855.RH.HAS.IT · info@rhelectronics.com
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Winbond  · Memory > NOR Flash

W29C04090B

Winbond 4 Mbit (512K × 8) NOR flash memory

Part NumberW29C04090B
ManufacturerWinbond
AvailabilityAvailable to order — request a quote

Specifications

TechnologyNOR Flash
Density4 Mbit
Organization512K×8
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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

Frequently asked

Is W29C04090B available?
We can source W29C04090B 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 W29C04090B by Winbond obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If W29C04090B 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 W29C04090B?
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 W29C04090B?
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.