Electronic Transformer Corp. · Electronic Components
1291AB
Reactor — Coils and Transformers
Part Number1291AB
ManufacturerElectronic Transformer Corp.
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-01-081-8112 (NSN)
Federal Item NameREACTOR
Federal Supply Class5950 — Coils and Transformers
Maximum Operating Temp85.0 CELSIUS
Body Width1.940 INCHES MAXIMUM
Body Height2.250 INCHES MAXIMUM
Frequency Rating20.0 KILOHERTZ MINIMUM SINGLE COMPONENT
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Inclosure TypeFULLY INCLOSED
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Mounting Hole Diameter0.177 INCHES NOMINAL SINGLE GROUP
Inductance Rating40.00 MICROHENRIES MINIMUM AND 70.00 MICROHENRIES MAXIMUM SINGLE COMPONENT SINGLE WINDING
Winding Conductor Size0.04030 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE WINDING
Mounting Facility Quantity4 SINGLE GROUP
Vendor Part NumbersC103255
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 1291AB available?
We can source 1291AB 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 1291AB by Electronic Transformer Corp. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 1291AB 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 1291AB?
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 1291AB?
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.