PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5300445-001Transformer,audio Frequency

C Systems Llc Dba Craig Systems Dba Eastern Technologies · NSN 5950-00-645-2021 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-645-2021 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-645-2021. Primary manufacturer part number: 5300445-001.
Features
  • Transformer,audio Frequency — FSC 5950
  • Impedance Rating in Ohms: 50.0 NOMINAL SINGLE COMPONENT SECOND PRIMARY
  • Body Length: 2.312 INCHES NOMINAL IN
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Winding Operating Current: 50.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT FIRST PRIMARY
  • Frequency Rating: 200.0 HERTZ MINIMUM AND 5.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
  • Primary to Secondary Turn Ratio: 1 TO 1 TO 9-3/8 SINGLE COMPONENT
  • Winding Function and Quantity: 2 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-645-2021, 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 C Systems Llc Dba Craig Systems Dba Eastern Technologies. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-00-645-2021
Primary Part Number5300445-001
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerC Systems Llc Dba Craig Systems Dba Eastern Technologies
StatusCANCELLED
Impedance Rating in Ohms50.0 NOMINAL SINGLE COMPONENT SECOND PRIMARY
Body Length2.312 INCHES NOMINAL IN
Center to Center Distance Between Mounting Facilities Parallel to Width1.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current50.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT FIRST PRIMARY
Frequency Rating200.0 HERTZ MINIMUM AND 5.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Primary to Secondary Turn Ratio1 TO 1 TO 9-3/8 SINGLE COMPONENT
Winding Function and Quantity2 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Length1.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Impedance Rating in Ohms600.0 NOMINAL SINGLE COMPONENT FIRST PRIMARY
Winding Operating Current20.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SECOND PRIMARY
Impedance Rating in Ohms50000.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Terminal Type and Quantity7 STANDOFF, SOLDER LUG
Inclosure TypeHERMETICALLY SEALED
Mounting Facility Quantity4 SINGLE GROUP
Body Outside Diameter1.688 INCHES NOMINAL IN
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE AND CORE SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
6685-00-138-254016868 INTERCHANGEABLE
Indicator,temperature,electrical
Terex Reedrill Dba Reedrill Texoma Div Terex Mining
2990-00-788-2745F162S04660 INTERCHANGEABLE
Governor,gasoline Engine
Sealcraft Corporation
5950-00-967-688322311 INTERCHANGEABLE
Transformer,power
Grimes Aerospace Company
6210-01-104-50132110QA1 INTERCHANGEABLE
Light,indicator
Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron
5962-01-127-8855A574A025-1301 INTERCHANGEABLE
Microcircuit,memory
Kearfott Corporation Div Guidance and Navigation Division
5365-01-372-928143353 INTERCHANGEABLE
Plug,machine Thread
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
Cross-Reference Index
Part NumberManufacturer
5300445-001 C Systems Llc Dba Craig Systems Dba Eastern Technologies (USA)
16868 Emerson Electric Co White-Rodgers Div (USA)
43353 Freed Transformer Co (USA)
Related Parts
6685-00-138-2540INTERCHANGEABLE
INDICATOR,TEMPERATURE,ELECTRICAL
16868
2990-00-788-2745INTERCHANGEABLE
GOVERNOR,GASOLINE ENGINE
F162S04660
5950-00-967-6883INTERCHANGEABLE
TRANSFORMER,POWER
22311
6210-01-104-5013INTERCHANGEABLE
LIGHT,INDICATOR
2110QA1
5962-01-127-8855INTERCHANGEABLE
MICROCIRCUIT,MEMORY
A574A025-1301
5365-01-372-9281INTERCHANGEABLE
PLUG,MACHINE THREAD
43353

Frequently Asked Questions

What is NSN 5950-00-645-2021?

NSN 5950-00-645-2021 is a Transformer,audio Frequency, manufactured by C Systems Llc Dba Craig Systems Dba Eastern Technologies, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-645-2021?

NSN 5950-00-645-2021 has 3 cross-referenced part numbers: 5300445-001 (C Systems Llc Dba Craig Systems Dba Eastern Technologies), 16868 (Emerson Electric Co White-Rodgers Div), 43353 (Freed Transformer Co).

What NSN replaces 5950-00-645-2021?

There are 6 known substitutes for 5950-00-645-2021: 6685-00-138-2540, 2990-00-788-2745, 5950-00-967-6883 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5300445-001?

Key specifications for 5300445-001: Impedance Rating in Ohms: 50.0 NOMINAL SINGLE COMPONENT SECOND PRIMARY; Body Length: 2.312 INCHES NOMINAL IN; Center to Center Distance Between Mounting Facilities Parallel to Width: 1.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Winding Operating Current: 50.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT FIRST PRIMARY. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-645-2021 still in active supply?

NSN 5950-00-645-2021 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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