Boeing · Electronic Components
12399-404
Transformer, Power
Part Number12399-404
ManufacturerBoeing
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-724-6130 (NSN)
Federal Item NameTRANSFORMER,POWER
Federal Supply Class5950 — Coils and Transformers
Body Width2.250 INCHES NOMINAL
Inclosure TypeHERMETICALLY SEALED
Input Output Phase RelationshipTHREE PHASE TO THREE PHASE SINGLE COMPONENT
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Center To Center Distance Between1.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP
Nominal Thread Size0.190 INCHES SINGLE GROUP
Terminal Type And Quantity23 WIRE HOOK
Body Height3.630 INCHES NOMINAL
Body Length4.190 INCHES NOMINAL
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Thread Quantity Per Inch32 SINGLE GROUP
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 12399-404 available?
We can source 12399-404 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 12399-404 by Boeing obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 12399-404 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 12399-404?
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 12399-404?
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.