MIL-SPEC · Electronic Components
RF221U
Detector, Radio Frequency
Part NumberRF221U
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN6625-00-935-0094 (NSN)
Federal Item NameDETECTOR,RADIO FREQUENCY
Federal Supply Class6625 — Test Instruments
Circuit Construction TypeSOLID STATE
Frequency Per Channel500.0 KILOHERTZ MINIMUM OPERATING CHANNEL AND 2.5 GIGAHERTZ MAXIMUM OPERATING CHANNEL
FSC Application DataIMPEDANCE MATCHING TEST SET
Overall Width2.046 INCHES NOMINAL
Overall Length2.437 INCHES NOMINAL
Basic Shape StyleIRREGULAR
Overall Height1.500 INCHES NOMINAL
Identification DesignatorRF221U-80058
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 RF221U available?
We can source RF221U 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 RF221U by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If RF221U 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 RF221U?
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 RF221U?
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.