Communication Coil, Inc. · Electronic Components
X557-1
Transformer, Radio Frequency
Part NumberX557-1
ManufacturerCommunication Coil, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-907-7593 (NSN)
Federal Item NameTRANSFORMER,RADIO FREQUENCY
Federal Supply Class5950 — Coils and Transformers
Inclosure TypeFULLY INCLOSED
Body Length0.500 INCHES NOMINAL
Frequency Rating1.9 MEGAHERTZ MAXIMUM SINGLE COMPONENT
Winding Function And Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Adjustment Device Drive TypeSLOTTED SCREW SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Terminal Type And Quantity4 WIRE LEAD
Transformer FunctionINTERSTAGE
Body Outside Diameter0.531 INCHES NOMINAL
Mounting MethodTERMINAL SINGLE GROUP
Adjustment Method And Quantity1 ADJUSTABLE CORE SINGLE COMPONENT
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 X557-1 available?
We can source X557-1 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 X557-1 by Communication Coil, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If X557-1 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 X557-1?
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 X557-1?
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.