Keytronics, Inc. · Electronic Components
KE503
Transformer, Audio Frequency
Part NumberKE503
ManufacturerKeytronics, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-904-4085 (NSN)
Federal Item NameTRANSFORMER,AUDIO FREQUENCY
Federal Supply Class5950 — Coils and Transformers
Reliability IndicatorNOT ESTABLISHED
Frequency Rating300.0 HERTZ MINIMUM AND 10000.0 HERTZ MAXIMUM SINGLE COMPONENT
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Mounting Facility Quantity2 SINGLE GROUP
Nominal Thread Size0.112 INCHES SINGLE GROUP
Impedance Rating In Ohms625.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Winding Operating Current1.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Body Height0.875 INCHES NOMINAL
Body Length0.937 INCHES NOMINAL
Body Width0.750 INCHES NOMINAL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) 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 KE503 available?
We can source KE503 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 KE503 by Keytronics, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If KE503 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 KE503?
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 KE503?
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.