Espey Mfg. & Electronics · Electronic Components
GR-12-A
Transformer, Audio Frequency
Part NumberGR-12-A
ManufacturerEspey Mfg. & Electronics
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-091-1506 (NSN)
Federal Item NameTRANSFORMER,AUDIO FREQUENCY
Federal Supply Class5950 — Coils and Transformers
Winding Shielding MethodINTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT
Terminal Type And Quantity7 WIRE HOOK
Body Height1.250 INCHES MINIMUM AND 1.375 INCHES MAXIMUM
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Frequency Rating4.85 KILOHERTZ MINIMUM AND 5.15 KILOHERTZ MAXIMUM SINGLE COMPONENT
Impedance Rating In Ohms4440.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Body Length0.938 INCHES MINIMUM AND 1.000 INCHES MAXIMUM
Overall Height1.875 INCHES MAXIMUM
Inclosure TypeHERMETICALLY SEALED
Reliability IndicatorNOT ESTABLISHED
Winding Function And Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Vendor Part Numbers128SCSEA747-1
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 GR-12-A available?
We can source GR-12-A 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 GR-12-A by Espey Mfg. & Electronics obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If GR-12-A 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 GR-12-A?
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 GR-12-A?
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.