Communication Coil, Inc. · Electronic Components
X657-1
Coil, Radio Frequency
Part NumberX657-1
ManufacturerCommunication Coil, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-902-7105 (NSN)
Federal Item NameCOIL,RADIO FREQUENCY
Federal Supply Class5950 — Coils and Transformers
Coil Form TypeHOLLOW SINGLE COMPONENT
Inclosure TypeFULLY INCLOSED
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Body Length0.500 INCHES NOMINAL
Adjustment Method And Quantity1 ADJUSTABLE CORE SINGLE COMPONENT
Mounting MethodTERMINAL SINGLE GROUP
Overall Diameter0.531 INCHES NOMINAL
Adjustment Device Drive TypeSLOTTED SCREW SINGLE COMPONENT
Inductance Rating340.00 MICROHENRIES MINIMUM AND 395.00 MICROHENRIES MAXIMUM SINGLE COMPONENT SINGLE WINDING
Winding Conductor Size0.00315 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE WINDING
Terminal Type And Quantity2 WIRE LEAD
Vendor Part Numbers278-1808-000
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 X657-1 available?
We can source X657-1 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 X657-1 by Communication Coil, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If X657-1 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 X657-1?
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 X657-1?
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.