PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12678Reactor

Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems · NSN 5950-00-057-5661 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-057-5661 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-057-5661. Primary manufacturer part number: 12678.
Features
  • Reactor — FSC 5950
  • Inductance Rating: 100.00 MICROHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
  • Reliability Indicator: NOT ESTABLISHED
  • Rating Method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING
  • Winding Operating Current: 500.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
  • DC Resistance Rating in Ohms: 0.300 SINGLE COMPONENT SINGLE WINDING
  • Body Length: 0.250 INCHES NOMINAL IN
  • Mounting Method: TERMINAL SINGLE GROUP
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-00-057-5661, 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 Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-057-5661
Primary Part Number12678
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerOeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
StatusACTIVE
Inductance Rating100.00 MICROHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
Reliability IndicatorNOT ESTABLISHED
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Winding Operating Current500.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
DC Resistance Rating in Ohms0.300 SINGLE COMPONENT SINGLE WINDING
Body Length0.250 INCHES NOMINAL IN
Mounting MethodTERMINAL SINGLE GROUP
Inclosure TypeFULLY INCLOSED
Terminal Type and Quantity2 WIRE LEAD
Winding Quantity1 SINGLE COMPONENT
Inductance TypeFIXED
Body Outside Diameter0.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5133-00-227-5962 INTERCHANGEABLE
Drill,twist
2810-00-448-661312678 INTERCHANGEABLE
Spring
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
5950-00-615-6504 INTERCHANGEABLE
Reactor
2815-00-875-829237161105 INTERCHANGEABLE
Cover,timing Gear,internal Combu
Perkins Engines Inc
6625-01-146-947812680 INTERCHANGEABLE
Voltmeter
Avo Intl
5360-01-567-810712678 INTERCHANGEABLE
Spring,helical,torsion
Navarro Spring Company
6625-01-569-095212678 INTERCHANGEABLE
Meter,antenna Tilt
Science Applications International Corporation
4820-01-601-837712678 INTERCHANGEABLE
Valve,check
Aerco International, Inc. Dba Aerco International Inc
Cross-Reference Index
Part NumberManufacturer
12678 Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems (USA)
860555-4 Litton Systems Inc. Div Navigation Systems Division (USA)
WE-2499 Wems Electronics Transformer Group (USA)
WE-2499 Magnetika Inc (USA)
Related Parts
5133-00-227-5962INTERCHANGEABLE
DRILL,TWIST
2810-00-448-6613INTERCHANGEABLE
SPRING
12678
5950-00-615-6504INTERCHANGEABLE
REACTOR
2815-00-875-8292INTERCHANGEABLE
COVER,TIMING GEAR,INTERNAL COMBU
37161105
6625-01-146-9478INTERCHANGEABLE
VOLTMETER
12680
5360-01-567-8107INTERCHANGEABLE
SPRING,HELICAL,TORSION
12678
6625-01-569-0952INTERCHANGEABLE
METER,ANTENNA TILT
12678
4820-01-601-8377INTERCHANGEABLE
VALVE,CHECK
12678

Frequently Asked Questions

What is NSN 5950-00-057-5661?

NSN 5950-00-057-5661 is a Reactor, manufactured by Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-057-5661?

NSN 5950-00-057-5661 has 4 cross-referenced part numbers: 12678 (Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems), 860555-4 (Litton Systems Inc. Div Navigation Systems Division), WE-2499 (Wems Electronics Transformer Group), WE-2499 (Magnetika Inc).

What NSN replaces 5950-00-057-5661?

There are 8 known substitutes for 5950-00-057-5661: 5133-00-227-5962, 2810-00-448-6613, 5950-00-615-6504 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12678?

Key specifications for 12678: Inductance Rating: 100.00 MICROHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING; Reliability Indicator: NOT ESTABLISHED; Rating Method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING; Winding Operating Current: 500.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING. 12 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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