PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

27557Transformer,power

Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit · NSN 5950-01-079-9616 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-079-9616 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-079-9616. Primary manufacturer part number: 27557.
Features
  • Transformer,power — FSC 5950
  • Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT
  • Maximum Operating Temp: 130.0 CELSIUS DEGC
  • Mounting Facility Quantity: 1 SINGLE GROUP
  • Mounting Hole Diameter: 0.213 INCHES NOMINAL SINGLE GROUP IN
  • Winding Operating Voltage: 178.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Winding Function and Quantity: 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
  • Winding Operating Current: 45.6 AMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-01-079-9616, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-079-9616
Primary Part Number27557
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerTransistor Devices Inc Div Astrodyne Tdi High Power Business Unit
StatusACTIVE
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Maximum Operating Temp130.0 CELSIUS DEGC
Mounting Facility Quantity1 SINGLE GROUP
Mounting Hole Diameter0.213 INCHES NOMINAL SINGLE GROUP IN
Winding Operating Voltage178.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Winding Operating Current45.6 AMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Features ProvidedTINNED WIRE LEADS
Body Length0.750 INCHES MAXIMUM IN
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Body Outside Diameter1.250 INCHES MAXIMUM IN
Terminal Type and Quantity9 WIRE LEAD
Winding Operating Voltage80.00 AC VOLTS NOMINAL SINGLE COMPONENT ALL SECONDARY
Inclosure TypeFULLY INCLOSED
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3110-01-075-584927557 INTERCHANGEABLE
Bearing
Dressta North America Ltd
5950-01-220-0413 INTERCHANGEABLE
Transformer,power
4730-01-254-4112 INTERCHANGEABLE
Parts Kit,steam Trap
5330-01-270-8291 INTERCHANGEABLE
Seal,plain Encased
5305-01-548-473927557 INTERCHANGEABLE
Screw,cap,hexagon Head
Eagle Components, Inc
5305-01-588-8793 INTERCHANGEABLE
Screw,cap,hexagon Head
Cross-Reference Index
Part NumberManufacturer
FTC-1857 Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit (USA)
27557 PRIMARY Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit (USA)
Related Parts
3110-01-075-5849INTERCHANGEABLE
BEARING
27557
5950-01-220-0413INTERCHANGEABLE
TRANSFORMER,POWER
4730-01-254-4112INTERCHANGEABLE
PARTS KIT,STEAM TRAP
5330-01-270-8291INTERCHANGEABLE
SEAL,PLAIN ENCASED
5305-01-548-4739INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
27557
5305-01-588-8793INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD

Frequently Asked Questions

What is NSN 5950-01-079-9616?

NSN 5950-01-079-9616 is a Transformer,power, manufactured by Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-079-9616?

NSN 5950-01-079-9616 has 2 cross-referenced part numbers: FTC-1857 (Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit), 27557 (Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit).

What NSN replaces 5950-01-079-9616?

There are 6 known substitutes for 5950-01-079-9616: 3110-01-075-5849, 5950-01-220-0413, 4730-01-254-4112 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 27557?

Key specifications for 27557: Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT; Maximum Operating Temp: 130.0 CELSIUS DEGC; Mounting Facility Quantity: 1 SINGLE GROUP; Mounting Hole Diameter: 0.213 INCHES NOMINAL SINGLE GROUP IN. 16 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com