PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

0221C0129Transformer,radio Frequency

Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems · NSN 5950-01-359-1997 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-359-1997 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-359-1997. Primary manufacturer part number: 0221C0129.
Features
  • Transformer,radio Frequency — FSC 5950
  • Rating Method: ELECTRICAL AND WINDING TURNS SINGLE COMPONENT SINGLE SECONDARY
  • Reliability Indicator: NOT ESTABLISHED
  • Body Width: 0.937 INCHES MAXIMUM IN
  • Inductance Rating: 1.11 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Frequency Rating: 100.0 KILOHERTZ NOMINAL SINGLE COMPONENT
  • Inductance Rating: 216.00 MICROHENRIES NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Coil Form Type: SOLID SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,radio Frequency, cataloged under National Stock Number 5950-01-359-1997, 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 Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems. Government technical data includes 18 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-359-1997
Primary Part Number0221C0129
Item NameTransformer,radio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerMartin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems
StatusACTIVE
Rating MethodELECTRICAL AND WINDING TURNS SINGLE COMPONENT SINGLE SECONDARY
Reliability IndicatorNOT ESTABLISHED
Body Width0.937 INCHES MAXIMUM IN
Inductance Rating1.11 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Frequency Rating100.0 KILOHERTZ NOMINAL SINGLE COMPONENT
Inductance Rating216.00 MICROHENRIES NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Coil Form TypeSOLID SINGLE COMPONENT
Mounting MethodTERMINAL SINGLE GROUP
Turn Quantity32 SINGLE COMPONENT SINGLE PRIMARY
Terminal Type and Quantity5 WIRE LEAD
Body Height0.400 INCHES MAXIMUM IN
Winding Conductor Size0.01264 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE SECONDARY IN
Inclosure TypeFULLY INCLOSED
Rating MethodELECTRICAL AND WINDING TURNS SINGLE COMPONENT SINGLE PRIMARY
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Winding Conductor Size0.01264 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY IN
Maximum Operating Temp105.0 CELSIUS DEGC
Turn Quantity10 SINGLE COMPONENT SINGLE SECONDARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
2915-00-037-791814770 INTERCHANGEABLE
Valve,idle
Triumph Engine Control Systems Llc
5133-00-228-135514770 INTERCHANGEABLE
Drill,twist
Viking Drill & Tool, Inc.
5962-01-134-3062 INTERCHANGEABLE
Microcircuit,memory
5930-01-439-971314770-037 INTERCHANGEABLE
Switch,push
Control Products Corporation
4730-01-574-9975R0085193 INTERCHANGEABLE
Tee,tube
Denel Vehicle Systems
Cross-Reference Index
Part NumberManufacturer
0221C0129 Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems (USA)
14770 Standex Electronics, Inc. (USA)
Related Parts
2915-00-037-7918INTERCHANGEABLE
VALVE,IDLE
14770
5133-00-228-1355INTERCHANGEABLE
DRILL,TWIST
14770
5962-01-134-3062INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5930-01-439-9713INTERCHANGEABLE
SWITCH,PUSH
14770-037
4730-01-574-9975INTERCHANGEABLE
TEE,TUBE
R0085193

Frequently Asked Questions

What is NSN 5950-01-359-1997?

NSN 5950-01-359-1997 is a Transformer,radio Frequency, manufactured by Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-359-1997?

NSN 5950-01-359-1997 has 2 cross-referenced part numbers: 0221C0129 (Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems), 14770 (Standex Electronics, Inc.).

What NSN replaces 5950-01-359-1997?

There are 5 known substitutes for 5950-01-359-1997: 2915-00-037-7918, 5133-00-228-1355, 5962-01-134-3062 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 0221C0129?

Key specifications for 0221C0129: Rating Method: ELECTRICAL AND WINDING TURNS SINGLE COMPONENT SINGLE SECONDARY; Reliability Indicator: NOT ESTABLISHED; Body Width: 0.937 INCHES MAXIMUM IN; Inductance Rating: 1.11 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE PRIMARY. 18 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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