Lockheed Martin Corporation · Electronic Components
663861
Transformer, Audio Frequency
Part Number663861
ManufacturerLockheed Martin Corporation
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-487-7918 (NSN)
Federal Item NameTRANSFORMER,AUDIO FREQUENCY
Federal Supply Class5950 — Coils and Transformers
Body Width1.047 INCHES NOMINAL1.047 INCHES NOMINAL
Impedance Rating In Ohms408.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY408.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Mounting Facility Quantity4 SINGLE GROUP4 SINGLE GROUP
Winding Operating Current45.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY45.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE SECON
Center To Center Distance Between1.656 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP1.656 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CE
Body Length1.344 INCHES NOMINAL
Inclosure TypeHERMETICALLY SEALED
Winding Function And Quantity1 PRIMARY AND 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT1 SECONDARY SINGLE COMPONENT
Terminal Type And Quantity5 WIRE HOOK
Body Height2.094 INCHES NOMINAL
Frequency Rating60.0 HERTZ MAXIMUM SINGLE COMPONENT60.0 HERTZ MAXIMUM SINGLE COMPONENT
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 663861 available?
We can source 663861 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 663861 by Lockheed Martin Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 663861 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 663861?
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 663861?
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.