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Sigma Electronics, Inc.  · Electronic Components

C4494

Reactor — Coils and Transformers

Part NumberC4494
ManufacturerSigma Electronics, Inc.
AvailabilityAvailable to order — request a quote

Specifications

Federal Item NameREACTOR
Federal Supply Class5950 — Coils and Transformers
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Inductance Rating155.00 MICROHENRIES MINIMUM AND 2.30 MILLIHENRIES MAXIMUM SINGLE COMPONENT SINGLE WINDING
Inductance TypeSWINGING
Nominal Thread Size0.112 INCHES SINGLE GROUP
Reliability IndicatorNOT ESTABLISHED
Body Width1.000 INCHES MINIMUM AND 1.062 INCHES MAXIMUM
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Dc Resistance Rating In Ohms0.110 SINGLE COMPONENT SINGLE WINDING
Distance Between Mounting Facility0.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP
Thread Quantity Per Inch40 SINGLE GROUP
Terminal Type And Quantity3 TAB, SOLDER LUG
Vendor Part Numbers18087, 42778-26
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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

Frequently asked

Is C4494 available?
We can source C4494 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 C4494 by Sigma Electronics, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If C4494 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 C4494?
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 C4494?
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.