PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-PRF-27/173Transformer,audio Frequency

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5950-01-265-1675 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-265-1675 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-265-1675. Primary manufacturer part number: MIL-PRF-27/173.
Features
  • Transformer,audio Frequency — FSC 5950
  • Mounting Method: TERMINAL SINGLE GROUP
  • Reliability Indicator: NOT ESTABLISHED
  • Maximum Operating Temp: 105.0 CELSIUS DEGC
  • Winding Function and Quantity: 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
  • Inclosure Type: FULLY INCLOSED
  • Body Width: 0.260 INCHES NOMINAL IN
  • Specification/standard Data: 81349-MIL-T-27/173 GOVERNMENT SPECIFICATION
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-01-265-1675, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-01-265-1675
Primary Part NumberMIL-PRF-27/173
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Mounting MethodTERMINAL SINGLE GROUP
Reliability IndicatorNOT ESTABLISHED
Maximum Operating Temp105.0 CELSIUS DEGC
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Inclosure TypeFULLY INCLOSED
Body Width0.260 INCHES NOMINAL IN
Specification/standard Data81349-MIL-T-27/173 GOVERNMENT SPECIFICATION
Impedance Rating in Ohms125.0 NOMINAL SINGLE COMPONENT ALL SECONDARY
Impedance Rating in Ohms10000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Frequency Rating300.0 HERTZ MINIMUM AND 250.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Body Height0.260 INCHES NOMINAL IN
Body Length0.260 INCHES NOMINAL IN
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.).
Terminal Type and Quantity7 PRINTED CIRCUIT
Maximum Transformer Power Rating75.0 MILLIWATTS SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5950-01-128-9950 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-146-7760 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-155-3787 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-158-1334 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-187-1713 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-259-8499 INTERCHANGEABLE
Transformer,audio Frequency
5950-01-264-1859 INTERCHANGEABLE
Transformer,audio Frequency
Cross-Reference Index
Part NumberManufacturer
MIL-PRF-27/173 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M27/173-10 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-T-27/173 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5950-01-128-9950INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-146-7760INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-155-3787INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-158-1334INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-187-1713INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-259-8499INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5950-01-264-1859INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY

Frequently Asked Questions

What is NSN 5950-01-265-1675?

NSN 5950-01-265-1675 is a Transformer,audio Frequency, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-01-265-1675?

NSN 5950-01-265-1675 has 3 cross-referenced part numbers: MIL-PRF-27/173 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M27/173-10 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-T-27/173 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5950-01-265-1675?

There are 7 known substitutes for 5950-01-265-1675: 5950-01-128-9950, 5950-01-146-7760, 5950-01-155-3787 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-PRF-27/173?

Key specifications for MIL-PRF-27/173: Mounting Method: TERMINAL SINGLE GROUP; Reliability Indicator: NOT ESTABLISHED; Maximum Operating Temp: 105.0 CELSIUS DEGC; Winding Function and Quantity: 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-01-265-1675 still in active supply?

NSN 5950-01-265-1675 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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