Communications & Power Industries · Electronic Components
F21989
Connector, Electron Tube
Part NumberF21989
ManufacturerCommunications & Power Industries
AvailabilityAvailable to order — request a quote
Specifications
NSN5935-00-009-4771 (NSN)
Federal Item NameCONNECTOR,ELECTRON TUBE
Federal Supply Class5935 — Connectors, Electrical
Overall Diameter3.600 INCHES NOMINAL
MaterialCOPPER ALLOY
Tube Pin Hole Diameter2.445 INCHES NOMINAL
Vendor Part Numbers138C019H01
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 F21989 available?
We can source F21989 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 F21989 by Communications & Power Industries obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If F21989 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 F21989?
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 F21989?
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.