Freed Transformer Co · Electronic Components
28155
Transformer, Audio Frequency
Part Number28155
ManufacturerFreed Transformer Co
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-683-3202 (NSN)
Federal Item NameTRANSFORMER,AUDIO FREQUENCY
Federal Supply Class5950 — Coils and Transformers
Impedance Rating In Ohms500.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Winding Function And Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Maximum Transformer Power Rating300.0 MILLIWATTS SINGLE COMPONENT
Body Outside Diameter1.000 INCHES NOMINAL
Distance Between Mounting Facility1.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP
Frequency Rating300.0 HERTZ MINIMUM AND 3.5 KILOHERTZ MAXIMUM SINGLE COMPONENT
Mounting Facility Quantity2 SINGLE GROUP
Terminal Type And Quantity4 TAB, SOLDER LUG
Mounting Hole Diameter0.125 INCHES NOMINAL SINGLE GROUP
Winding Operating Current15.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Features ProvidedELECTROSTATIC SENSITIVE
Criticality Code JustificationCBBL
ESD/EMICode B — ESD/EMI sensitive item
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 28155 available?
We can source 28155 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 28155 by Freed Transformer Co obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 28155 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 28155?
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 28155?
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.