PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

677-1524-000Transformer,audio Frequency

Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems · NSN 5950-01-104-7121 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-104-7121 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-104-7121. Primary manufacturer part number: 677-1524-000.
Features
  • Transformer,audio Frequency — FSC 5950
  • Frequency Rating: 300.0 HERTZ MINIMUM AND 20.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
  • Specification/standard Data: 81349-MIL-T-27/172 GOVERNMENT SPECIFICATION
  • Winding Operating Current: 6.0 MILLIAMPERES DC MINIMUM AND 8.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
  • Test Data Document: 81349-MIL-T-27 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Winding Function and Quantity: 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
  • Mounting Method: TERMINAL SINGLE GROUP
  • Inclosure Type: FULLY INCLOSED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-01-104-7121, 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 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-01-104-7121
Primary Part Number677-1524-000
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerRockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
StatusCANCELLED
Frequency Rating300.0 HERTZ MINIMUM AND 20.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Specification/standard Data81349-MIL-T-27/172 GOVERNMENT SPECIFICATION
Winding Operating Current6.0 MILLIAMPERES DC MINIMUM AND 8.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Test Data Document81349-MIL-T-27 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Mounting MethodTERMINAL SINGLE GROUP
Inclosure TypeFULLY INCLOSED
Body Length0.469 INCHES MAXIMUM IN
Impedance Rating in Ohms30.0 MINIMUM AND 37.5 MAXIMUM SINGLE COMPONENT ALL SECONDARY
Maximum Operating Temp105.0 CELSIUS DEGC
Terminal Type and Quantity7 WIRE LEAD
Body Outside Diameter0.344 INCHES MAXIMUM IN
Maximum Transformer Power Rating500.0 MILLIWATTS SINGLE COMPONENT
Impedance Rating in Ohms400.0 MINIMUM AND 500.0 MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6240-00-155-77991141 INTERCHANGEABLE
Lamp,incandescent
Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron
3445-00-239-07060236 INTERCHANGEABLE
Shearing Machine,metal,squaring
Rw Acquisition, Llc Dba Roper Whitney Company
2805-00-271-906958321A INTERCHANGEABLE
Valve,poppet,engine
Brinkley Technology Group Llc Dba Hercules Manufacturing
4730-00-287-1766SAE J512 4-2 060202BA INTERCHANGEABLE
Elbow,pipe to Tube
Sae International Dba Sae International
2920-00-353-72491GE1003L INTERCHANGEABLE
Cap,ignition Distribution
Prestolite Electric Inc
5330-00-569-3663 INTERCHANGEABLE
Gasket
5905-00-695-4936N16R89603-7577 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Naval Ship Systems Command
6605-00-759-2083 INTERCHANGEABLE
Panel,control
4820-00-834-52701642 INTERCHANGEABLE
Stem,fluid Valve
Lawler Manufacturing Company, Inc.
5330-00-927-78421642 INTERCHANGEABLE
Seal,plain Encased
Parker Hannifin Corporation Div Chelsea Products Division
Cross-Reference Index
Part NumberManufacturer
677-1524-000 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
D0T42 United Transformer Corp Sub of Opt Industries Inc (USA)
MIL-PRF-27/172 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
1783709-42 Honeywell International Inc. Dba Honeywell International (USA)
M27/172-08 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
1642 Pico Electronics Inc (USA)
MIL-T-27/172 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
677-1524-00 Alcatel-Lucent Holdings Inc. (USA)
D0T42 Magnetika Inc (USA)
677-1524-000 Alcatel-Lucent Holdings Inc. (USA)
Related Parts
6240-00-155-7799INTERCHANGEABLE
LAMP,INCANDESCENT
1141
3445-00-239-0706INTERCHANGEABLE
SHEARING MACHINE,METAL,SQUARING
0236
2805-00-271-9069INTERCHANGEABLE
VALVE,POPPET,ENGINE
58321A
4730-00-287-1766INTERCHANGEABLE
ELBOW,PIPE TO TUBE
SAE J512 4-2 060202BA
2920-00-353-7249INTERCHANGEABLE
CAP,IGNITION DISTRIBUTION
1GE1003L
5330-00-569-3663INTERCHANGEABLE
GASKET
5905-00-695-4936INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
N16R89603-7577
6605-00-759-2083INTERCHANGEABLE
PANEL,CONTROL
4820-00-834-5270INTERCHANGEABLE
STEM,FLUID VALVE
1642
5330-00-927-7842INTERCHANGEABLE
SEAL,PLAIN ENCASED
1642
5930-01-033-6979INTERCHANGEABLE
SWITCH,PUSH
051410
5310-01-193-9510INTERCHANGEABLE
WASHER,LOCK
16-42

Frequently Asked Questions

What is NSN 5950-01-104-7121?

NSN 5950-01-104-7121 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: cancelled.

What are the part numbers for NSN 5950-01-104-7121?

NSN 5950-01-104-7121 has 10 cross-referenced part numbers: 677-1524-000 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), D0T42 (United Transformer Corp Sub of Opt Industries Inc), MIL-PRF-27/172 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 1783709-42 (Honeywell International Inc. Dba Honeywell International), M27/172-08 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 5 more.

What NSN replaces 5950-01-104-7121?

There are 12 known substitutes for 5950-01-104-7121: 6240-00-155-7799, 3445-00-239-0706, 2805-00-271-9069 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 677-1524-000?

Key specifications for 677-1524-000: Frequency Rating: 300.0 HERTZ MINIMUM AND 20.0 KILOHERTZ MAXIMUM SINGLE COMPONENT; Specification/standard Data: 81349-MIL-T-27/172 GOVERNMENT SPECIFICATION; Winding Operating Current: 6.0 MILLIAMPERES DC MINIMUM AND 8.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY; Test Data Document: 81349-MIL-T-27 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-01-104-7121 still in active supply?

NSN 5950-01-104-7121 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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