Sigma Electronics, Inc. · Electronic Components
P4490
Transformer, Radio Frequency
Part NumberP4490
ManufacturerSigma Electronics, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-01-105-0591 (NSN)
Federal Item NameTRANSFORMER,RADIO FREQUENCY
Federal Supply Class5950 — Coils and Transformers
Winding Conductor Size0.02257 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT FIRST SECONDARY
Nominal Thread Size0.112 INCHES SINGLE GROUP
Turn Quantity38 SINGLE COMPONENT FIRST SECONDARY
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Terminal Type And Quantity14 WIRE LEAD
Reliability IndicatorNOT ESTABLISHED
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Thread Quantity Per Inch40 SINGLE GROUP
Mounting Facility Quantity1 SINGLE GROUP
Winding Function And Quantity2 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
Rating MethodWINDING TURNS SINGLE COMPONENT ALL SECONDARY
Vendor Part Numbers18075
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 P4490 available?
We can source P4490 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 P4490 by Sigma Electronics, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If P4490 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 P4490?
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 P4490?
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.