Torotel, Inc. · Electronic Components
TD-21
Coil, Radio Frequency
Part NumberTD-21
ManufacturerTorotel, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-01-011-4813 (NSN)
Federal Item NameCOIL,RADIO FREQUENCY
Federal Supply Class5950 — Coils and Transformers
Body Length0.390 INCHES MAXIMUM
Winding Operating Current70.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Quality Factor50 MINIMUM SINGLE COMPONENT SINGLE WINDING
Coil Form TypeSOLID SINGLE COMPONENT
Body Width0.197 INCHES MAXIMUM
Inclosure TypeFULLY INCLOSED
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Core ConstructionS0LID SINGLE COMPONENT
Maximum Operating Temp125.0 CELSIUS
Inductance Rating4.70 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
Reliability IndicatorNOT ESTABLISHED
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 TD-21 available?
We can source TD-21 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 TD-21 by Torotel, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If TD-21 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 TD-21?
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 TD-21?
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.