PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

677-0121-00Transformer,audio Frequency

Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems · NSN 5950-00-984-1225 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-984-1225 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-984-1225. Primary manufacturer part number: 677-0121-00.
Features
  • Transformer,audio Frequency — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Terminal Type and Quantity: 4 TAB, SOLDER LUG
  • Winding Shielding Method: INTERNAL SHIELD GROUNDED TO INCLOSURE AND CORE SINGLE COMPONENT
  • Body Length: 1.875 INCHES NOMINAL IN
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
  • Impedance Rating in Ohms: 82.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Impedance Rating in Ohms: 1200.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-984-1225, 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 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-984-1225
Primary Part Number677-0121-00
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerRockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Terminal Type and Quantity4 TAB, SOLDER LUG
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE AND CORE SINGLE COMPONENT
Body Length1.875 INCHES NOMINAL IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Impedance Rating in Ohms82.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Impedance Rating in Ohms1200.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Body Width0.875 INCHES NOMINAL IN
Nominal Thread Size0.112 INCHES SINGLE GROUP IN
Distance Between Mounting Facility Centers0.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Inclosure TypeHERMETICALLY SEALED
Body Height0.875 INCHES NOMINAL IN
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Frequency Rating300.0 HERTZ MINIMUM AND 5.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Thread Quantity Per Inch40 SINGLE GROUP
Mounting Facility Quantity2 SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5110-00-249-288331.487 INTERCHANGEABLE
File,hand
Grobet File Co of America Inc Dba Grobet Usa
3020-01-529-463031487 INTERCHANGEABLE
Gear,differential
Dm Manufacturing, Inc.
Cross-Reference Index
Part NumberManufacturer
677-0121-00 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
31487 Emerson Electric Co White-Rodgers Div (USA)
Related Parts
5110-00-249-2883INTERCHANGEABLE
FILE,HAND
31.487
3020-01-529-4630INTERCHANGEABLE
GEAR,DIFFERENTIAL
31487

Frequently Asked Questions

What is NSN 5950-00-984-1225?

NSN 5950-00-984-1225 is a Transformer,audio Frequency, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-984-1225?

NSN 5950-00-984-1225 has 2 cross-referenced part numbers: 677-0121-00 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 31487 (Emerson Electric Co White-Rodgers Div).

What NSN replaces 5950-00-984-1225?

There are 2 known substitutes for 5950-00-984-1225: 5110-00-249-2883, 3020-01-529-4630. Verify interchangeability with system specifications before substitution.

What are the specifications of 677-0121-00?

Key specifications for 677-0121-00: Reliability Indicator: NOT ESTABLISHED; Terminal Type and Quantity: 4 TAB, SOLDER LUG; Winding Shielding Method: INTERNAL SHIELD GROUNDED TO INCLOSURE AND CORE SINGLE COMPONENT; Body Length: 1.875 INCHES NOMINAL IN. 17 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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