Inrcore · Electronic Components
S278
Transformer, Audio Frequency
Part NumberS278
ManufacturerInrcore
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-858-6044 (NSN)
Federal Item NameTRANSFORMER,AUDIO FREQUENCY
Federal Supply Class5950 — Coils and Transformers
Center To Center Distance Between1.593 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP
Primary To Secondary Turn Ratio1 TO 1 SINGLE COMPONENT
Impedance Rating In Ohms420.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Mounting Facility Quantity4 SINGLE GROUP
Body Length2.063 INCHES NOMINAL
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Frequency Rating100.0 HERTZ MINIMUM AND 20.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Winding Operating Current25.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Body Height2.500 INCHES NOMINAL
Terminal Type And Quantity4 TAB, SOLDER LUG
Winding Function And Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Vendor Part Numbers101060
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 S278 available?
We can source S278 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 S278 by Inrcore obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If S278 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 S278?
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 S278?
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.