PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

37544Transformer,audio Frequency

Freed Transformer Co · NSN 5950-00-646-9812 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-646-9812 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-646-9812. Primary manufacturer part number: 37544.
Features
  • Transformer,audio Frequency — FSC 5950
  • Mounting Method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
  • Winding Function and Quantity: 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
  • Mounting Hole Diameter: 0.125 INCHES NOMINAL SINGLE GROUP IN
  • Winding Operating Current: 4.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
  • Impedance Rating in Ohms: 200.0 NOMINAL SINGLE COMPONENT ALL SECONDARY
  • Inclosure Type: HERMETICALLY SEALED
  • Mounting Facility Quantity: 2 SINGLE GROUP
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-646-9812, 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 Freed Transformer Co. Government technical data includes 16 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-646-9812
Primary Part Number37544
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusACTIVE
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Mounting Hole Diameter0.125 INCHES NOMINAL SINGLE GROUP IN
Winding Operating Current4.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Impedance Rating in Ohms200.0 NOMINAL SINGLE COMPONENT ALL SECONDARY
Inclosure TypeHERMETICALLY SEALED
Mounting Facility Quantity2 SINGLE GROUP
Body Length1.750 INCHES MAXIMUM IN
Terminal Type and Quantity6 TAB, SOLDER LUG
Frequency Rating360.0 HERTZ MINIMUM AND 440.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Maximum Transformer Power Rating10.0 WATTS SINGLE COMPONENT
Distance Between Mounting Facility Centers1.438 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Impedance Rating in Ohms2000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Body Width0.719 INCHES MAXIMUM IN
Body Height0.750 INCHES MAXIMUM IN
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-00-051-8605MS16995-77 INTERCHANGEABLE
Screw,cap,socket Head
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5331-00-136-5076 INTERCHANGEABLE
O-Ring
5330-00-139-008737544 INTERCHANGEABLE
Retainer,packing
Napco International Llc Dba Napco International Inc
1650-00-386-86662505-2 INTERCHANGEABLE
Filtering Disk,fluid
Goodrich Corporation
5325-00-816-4239 INTERCHANGEABLE
Ring,retaining
1680-01-068-697825052 INTERCHANGEABLE
Window
Barksdale, Inc
6105-01-117-98432505-2 INTERCHANGEABLE
Motor,direct Current
Electric Boat Corporation Div General Dynamics Electric Boat
5930-01-122-6543SN-BSB6GMV-6-32V1.0-A1NU-ZRP-4U INTERCHANGEABLE
Switch,flow
Universal Flow Monitors Inc
5360-01-125-418737544 INTERCHANGEABLE
Spring,helical,compression
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
6150-01-171-4603ECI-14172 INTERCHANGEABLE
Bus,conductor
Mersen Usa Spm Corp.
Cross-Reference Index
Part NumberManufacturer
37544 Freed Transformer Co (USA)
25052 Emerson Electric Co White-Rodgers Div (USA)
Related Parts
5305-00-051-8605INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
MS16995-77
5331-00-136-5076INTERCHANGEABLE
O-RING
5330-00-139-0087INTERCHANGEABLE
RETAINER,PACKING
37544
1650-00-386-8666INTERCHANGEABLE
FILTERING DISK,FLUID
2505-2
5325-00-816-4239INTERCHANGEABLE
RING,RETAINING
1680-01-068-6978INTERCHANGEABLE
WINDOW
25052
6105-01-117-9843INTERCHANGEABLE
MOTOR,DIRECT CURRENT
2505-2
5930-01-122-6543INTERCHANGEABLE
SWITCH,FLOW
SN-BSB6GMV-6-32V1.0-A1NU-ZRP-4U
5360-01-125-4187INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
37544
6150-01-171-4603INTERCHANGEABLE
BUS,CONDUCTOR
ECI-14172
5360-01-287-5297INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5330-01-332-8200INTERCHANGEABLE
GASKET
25052

Frequently Asked Questions

What is NSN 5950-00-646-9812?

NSN 5950-00-646-9812 is a Transformer,audio Frequency, manufactured by Freed Transformer Co, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-646-9812?

NSN 5950-00-646-9812 has 2 cross-referenced part numbers: 37544 (Freed Transformer Co), 25052 (Emerson Electric Co White-Rodgers Div).

What NSN replaces 5950-00-646-9812?

There are 12 known substitutes for 5950-00-646-9812: 5305-00-051-8605, 5331-00-136-5076, 5330-00-139-0087 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 37544?

Key specifications for 37544: Mounting Method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP; Winding Function and Quantity: 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT; Mounting Hole Diameter: 0.125 INCHES NOMINAL SINGLE GROUP IN; Winding Operating Current: 4.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY. 16 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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