PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

37121Reactor

Freed Transformer Co · NSN 5950-00-070-7993 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-070-7993 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-070-7993. Primary manufacturer part number: 37121.
Features
  • Reactor — FSC 5950
  • Mounting Facility Quantity: 1 SINGLE GROUP
  • Inductance Type: FIXED
  • Inclosure Type: FULLY INCLOSED
  • Inductance Rating: 20.00 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
  • Winding Operating Current: 20.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
  • DC Resistance Rating in Ohms: 80.000 SINGLE COMPONENT SINGLE WINDING
  • Mounting Method: UNTHREADED HOLE(S) SINGLE GROUP
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-00-070-7993, 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 14 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-070-7993
Primary Part Number37121
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusACTIVE
Mounting Facility Quantity1 SINGLE GROUP
Inductance TypeFIXED
Inclosure TypeFULLY INCLOSED
Inductance Rating20.00 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
Winding Operating Current20.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
DC Resistance Rating in Ohms80.000 SINGLE COMPONENT SINGLE WINDING
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Body Length0.500 INCHES NOMINAL IN
Overall Diameter1.188 INCHES NOMINAL IN
Winding Quantity1 SINGLE COMPONENT
Mounting Hole Diameter0.188 INCHES NOMINAL SINGLE GROUP IN
Reliability IndicatorNOT ESTABLISHED
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Terminal Type and Quantity2 TAB, SOLDER LUG
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5310-00-419-8014371-21 INTERCHANGEABLE
Washer,flat
Elbitamerica, Inc.
2530-01-009-38133712-1 INTERCHANGEABLE
Disk,wheel
Pdi Ground Support Systems, Inc.
5915-01-034-5562583R669H02 INTERCHANGEABLE
Filter,band Pass
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5962-01-106-0642 INTERCHANGEABLE
Microcircuit,digital
7530-01-294-01503R4469 INTERCHANGEABLE
Label
Xerox Corporation
5340-01-682-78233712-1 INTERCHANGEABLE
Wheel,solid,metallic
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Cross-Reference Index
Part NumberManufacturer
690409 Bae Systems Information and Electronic Systems Integration Inc. (USA)
37121 PRIMARY Freed Transformer Co (USA)
Related Parts
5310-00-419-8014INTERCHANGEABLE
WASHER,FLAT
371-21
2530-01-009-3813INTERCHANGEABLE
DISK,WHEEL
3712-1
5915-01-034-5562INTERCHANGEABLE
FILTER,BAND PASS
583R669H02
5962-01-106-0642INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
7530-01-294-0150INTERCHANGEABLE
LABEL
3R4469
5340-01-682-7823INTERCHANGEABLE
WHEEL,SOLID,METALLIC
3712-1

Frequently Asked Questions

What is NSN 5950-00-070-7993?

NSN 5950-00-070-7993 is a Reactor, manufactured by Freed Transformer Co, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-070-7993?

NSN 5950-00-070-7993 has 2 cross-referenced part numbers: 690409 (Bae Systems Information and Electronic Systems Integration Inc.), 37121 (Freed Transformer Co).

What NSN replaces 5950-00-070-7993?

There are 6 known substitutes for 5950-00-070-7993: 5310-00-419-8014, 2530-01-009-3813, 5915-01-034-5562 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 37121?

Key specifications for 37121: Mounting Facility Quantity: 1 SINGLE GROUP; Inductance Type: FIXED; Inclosure Type: FULLY INCLOSED; Inductance Rating: 20.00 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING. 14 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com