● 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
CPI Electron Device Business  · Electronic Components

SFD-381A

Electron Tube

Part NumberSFD-381A
ManufacturerCPI Electron Device Business
AvailabilityAvailable to order — request a quote

Specifications

Federal Item NameELECTRON TUBE
Federal Supply Class5960 — Electron Tubes
Tube TypeMAGNETRON
Vendor Part NumbersL-4590, L-4590/8945
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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 SFD-381A available?
We can source SFD-381A 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 SFD-381A by CPI Electron Device Business obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If SFD-381A 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 SFD-381A?
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 SFD-381A?
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.