Lockheed Martin Corporation · Electronic Components
B33557-3
Transformer, Radio Frequency
Part NumberB33557-3
ManufacturerLockheed Martin Corporation
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-023-1916 (NSN)
Federal Item NameTRANSFORMER,RADIO FREQUENCY
Federal Supply Class5950 — Coils and Transformers
Thread Quantity Per Inch28 SINGLE GROUP
Winding Function And Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Body Length1.062 INCHES NOMINAL
Inclosure TypeFULLY INCLOSED
Terminal Type And Quantity5 TAB, SOLDER LUG
Mounting Facility Quantity1 SINGLE GROUP
Thread Series DesignatorUNF SINGLE GROUP
Coil Form TypeHOLLOW SINGLE COMPONENT
Adjustment Method And Quantity1 ADJUSTABLE CORE SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Nominal Thread Size0.250 INCHES SINGLE GROUP
Vendor Part NumbersB19644-3
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 B33557-3 available?
We can source B33557-3 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 B33557-3 by Lockheed Martin Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If B33557-3 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 B33557-3?
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 B33557-3?
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.