Thordarson Inc. · Electronic Components
21F100
Transformer, Power
Part Number21F100
ManufacturerThordarson Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-929-7282 (NSN)
Federal Item NameTRANSFORMER,POWER
Federal Supply Class5950 — Coils and Transformers
Body Height1.250 INCHES NOMINAL
Terminal Type And Quantity8 WIRE LEAD
Distance Between Mounting Facility1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP
Winding Operating Voltage109.90 AC VOLTS NOMINAL AND 115.00 AC VOLTS NOMINAL AND 121.90 AC VOLTS NOMINAL AND 128.80 AC VOLTS NOMINAL SINGLE CO
Inclosure TypeFULLY INCLOSED
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Winding Operating Current40.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Mounting Hole Diameter0.188 INCHES NOMINAL SINGLE GROUP
Winding Power Rating1.04 VOLTS-AMPERES SINGLE COMPONENT SINGLE SECONDARY
Input Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Overall Length2.125 INCHES NOMINAL
Vendor Part NumbersFT13
Cancelled NSN5950-00-031-4685 (cancelled)
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 21F100 available?
We can source 21F100 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 21F100 by Thordarson Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 21F100 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 21F100?
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 21F100?
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.