PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D0T20Transformer,audio Frequency

Magnetika Inc · NSN 5950-00-755-4163 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-755-4163 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-755-4163. Primary manufacturer part number: D0T20.
Features
  • Transformer,audio Frequency — FSC 5950
  • Primary to Secondary Turn Ratio: 1 TO 1-1/10 SINGLE COMPONENT
  • Impedance Rating in Ohms: 600.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Body Length: 0.469 INCHES MAXIMUM IN
  • Frequency Rating: 300.0 HERTZ MINIMUM AND 10.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
  • Body Outside Diameter: 0.344 INCHES MAXIMUM IN
  • Maximum Transformer Power Rating: 500.0 MILLIWATTS SINGLE COMPONENT
  • Impedance Rating in Ohms: 500.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-755-4163, 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 Magnetika Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 18 commercial cross-references from 15 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
NSN5950-00-755-4163
Primary Part NumberD0T20
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerMagnetika Inc
StatusCANCELLED
Primary to Secondary Turn Ratio1 TO 1-1/10 SINGLE COMPONENT
Impedance Rating in Ohms600.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Body Length0.469 INCHES MAXIMUM IN
Frequency Rating300.0 HERTZ MINIMUM AND 10.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Body Outside Diameter0.344 INCHES MAXIMUM IN
Maximum Transformer Power Rating500.0 MILLIWATTS SINGLE COMPONENT
Impedance Rating in Ohms500.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Inclosure TypeHERMETICALLY SEALED
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Winding Operating Current5.5 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Terminal Type and Quantity5 WIRE LEAD
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
5360-00-007-9944 INTERCHANGEABLE
Spring,assembly
5950-00-480-6664D0T20 INTERCHANGEABLE
Transformer,power
Magnetika Inc
5950-00-914-340843272-1 INTERCHANGEABLE
Transformer,power
Thales Usa, Inc. Div Air Mobility Solutions ("ams")
5950-01-104-7124 INTERCHANGEABLE
Transformer,audio Frequency
7105-01-154-3865NAMCC02 INTERCHANGEABLE
Cot,folding
North American Manufacturing Company, Llc
7520-01-327-4799 INTERCHANGEABLE
Holder,desk Memorandum Paper
Cross-Reference Index
Part NumberManufacturer
ER377 Magnetika Inc (USA)
8182021-19 Lockheed Martin Corporation Div Rms (USA)
1620 Pico Electronics Inc (USA)
677-1287-000 Rockwell Collins France Div Collins Aerospace - Avionics (FRA)
677-1287-000 Alcatel-Lucent Holdings Inc. (USA)
432721 Raytheon Technical Services Company (USA)
D0T20 PRIMARY Magnetika Inc (USA)
TT838 Telectro Systems Corp
C330 Howell Instruments, Inc. Dba Howell Instruments Inc (USA)
1783709-20 Honeywell International Inc. Dba Honeywell International (USA)
D0T20 United Transformer Corp Sub of Opt Industries Inc (USA)
292-10007P1 Raytheon Co Equipment Development Lab (USA)
8182021-19 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
ER377 United Transformer Corp Sub of Opt Industries Inc (USA)
MIT220 Thordarson Inc (USA)
432721 Cae Usa Inc. (USA)
677-1287-00 Alcatel-Lucent Holdings Inc. (USA)
1620 Elcos (BEL)
Related Parts
5360-00-007-9944INTERCHANGEABLE
SPRING,ASSEMBLY
5950-00-480-6664INTERCHANGEABLE
TRANSFORMER,POWER
D0T20
5950-00-914-3408INTERCHANGEABLE
TRANSFORMER,POWER
43272-1
5950-01-104-7124INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
7105-01-154-3865INTERCHANGEABLE
COT,FOLDING
NAMCC02
7520-01-327-4799INTERCHANGEABLE
HOLDER,DESK MEMORANDUM PAPER

Frequently Asked Questions

What is NSN 5950-00-755-4163?

NSN 5950-00-755-4163 is a Transformer,audio Frequency, manufactured by Magnetika Inc, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-755-4163?

NSN 5950-00-755-4163 has 18 cross-referenced part numbers: ER377 (Magnetika Inc), 8182021-19 (Lockheed Martin Corporation Div Rms), 1620 (Pico Electronics Inc), 677-1287-000 (Rockwell Collins France Div Collins Aerospace - Avionics), 677-1287-000 (Alcatel-Lucent Holdings Inc.) and 13 more.

What NSN replaces 5950-00-755-4163?

There are 6 known substitutes for 5950-00-755-4163: 5360-00-007-9944, 5950-00-480-6664, 5950-00-914-3408 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of D0T20?

Key specifications for D0T20: Primary to Secondary Turn Ratio: 1 TO 1-1/10 SINGLE COMPONENT; Impedance Rating in Ohms: 600.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY; Body Length: 0.469 INCHES MAXIMUM IN; Frequency Rating: 300.0 HERTZ MINIMUM AND 10.0 KILOHERTZ MAXIMUM SINGLE COMPONENT. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-755-4163 still in active supply?

NSN 5950-00-755-4163 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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