General Dynamics Mission Systems · Electronic Components
55-90851-1
Transformer, Power
Part Number55-90851-1
ManufacturerGeneral Dynamics Mission Systems
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-897-8781 (NSN)
Federal Item NameTRANSFORMER,POWER
Federal Supply Class5950 — Coils and Transformers
Reliability IndicatorNOT ESTABLISHED
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO CORE AND BROUGHT OUT TO TERMINAL SINGLE COMPONENT
Winding Operating Voltage247.50 AC VOLTS NOMINAL AND 990.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
Mounting MethodFLANGE AND SLOT SINGLE GROUP
Inclosure TypeHERMETICALLY SEALED
Body Height4.937 INCHES NOMINAL
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Terminal Type And Quantity13 TAB, SOLDER LUG
Center To Center Distance Between3.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP
Mounting Slot Width0.228 INCHES NOMINAL SINGLE GROUP
Mounting Facility Quantity4 SINGLE GROUP
Vendor Part Numbers55-90851-1ISSUEA
Cancelled NSN5950-00-647-6944 (cancelled)
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 55-90851-1 available?
We can source 55-90851-1 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 55-90851-1 by General Dynamics Mission Systems obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 55-90851-1 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 55-90851-1?
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 55-90851-1?
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.