Viking Technologies, Ltd.. · Electronic Components
E491
Transformer, Radio Frequency
Part NumberE491
ManufacturerViking Technologies, Ltd..
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-230-0941 (NSN)
Federal Item NameTRANSFORMER,RADIO FREQUENCY
Federal Supply Class5950 — Coils and Transformers
Terminal Type And Quantity4 PIN
Body Width1.328 INCHES NOMINAL
Coil Form TypeHOLLOW SINGLE COMPONENT
Adjustment Method And Quantity1 ADJUSTABLE CAPACITOR SINGLE COMPONENT
Adjustment Device Drive TypeSLOTTED SCREW SINGLE COMPONENT
Turn Quantity130 SINGLE COMPONENT SINGLE SECONDARY
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Mounting Hole Diameter0.312 INCHES NOMINAL SINGLE GROUP
Frequency Rating600.0 KILOHERTZ MINIMUM AND 1.2 MEGAHERTZ MAXIMUM SINGLE COMPONENT
Winding Conductor Size0.00397 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY
Body Length2.344 INCHES NOMINAL
Vendor Part Numbers47292
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 E491 available?
We can source E491 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 E491 by Viking Technologies, Ltd.. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If E491 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 E491?
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 E491?
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.