PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12203Reactor

Standex Electronics, Inc. · NSN 5950-00-316-6121 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-316-6121 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-316-6121. Primary manufacturer part number: 12203.
Features
  • Reactor — FSC 5950
  • DC Resistance Rating in Ohms: 1.300 SINGLE COMPONENT SINGLE WINDING
  • Winding Quantity: 1 SINGLE COMPONENT
  • Inductance Rating: 3.70 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
  • Inductance Type: FIXED
  • Mounting Facility Quantity: 1 SINGLE GROUP
  • Inclosure Type: FULLY INCLOSED
  • 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 5950-00-316-6121, 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 Standex Electronics, Inc.. Government technical data includes 11 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-316-6121
Primary Part Number12203
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerStandex Electronics, Inc.
StatusACTIVE
DC Resistance Rating in Ohms1.300 SINGLE COMPONENT SINGLE WINDING
Winding Quantity1 SINGLE COMPONENT
Inductance Rating3.70 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
Inductance TypeFIXED
Mounting Facility Quantity1 SINGLE GROUP
Inclosure TypeFULLY INCLOSED
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Body Length0.400 INCHES MAXIMUM IN
Body Outside Diameter0.830 INCHES MAXIMUM IN
Mounting Hole Diameter0.120 INCHES MINIMUM AND 0.135 INCHES MAXIMUM SINGLE GROUP IN
Terminal Type and Quantity2 WIRE LEAD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6625-00-050-66891220-3 INTERCHANGEABLE
Voltmeter
Jewell Instruments Llc
5133-00-189-9248 INTERCHANGEABLE
Drill,twist
5330-00-291-774212203 INTERCHANGEABLE
Seal,plain Encased
Harbormaster Marine, Inc
5330-00-297-619233524 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
5340-00-353-299312203 INTERCHANGEABLE
Bellows,protection
Tld Wollard Llc
6350-00-389-4584N12203 INTERCHANGEABLE
Valve,pilot
Leslie Controls, Inc. Dba Leslie Controls Inc
4310-00-705-6933 INTERCHANGEABLE
Vacuum Pump
5975-00-877-6893 INTERCHANGEABLE
Bushing,electrical Conduit
2520-01-099-10990014304 INTERCHANGEABLE
Parts Kit,hydraulic Transmission
Parker Hannifin Corporation Div Cylinder Division
5950-01-100-119261901-010 INTERCHANGEABLE
Transformer,power
Dynalec Corporation
Cross-Reference Index
Part NumberManufacturer
226453-004 Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems (USA)
12203 PRIMARY Standex Electronics, Inc. (USA)
TC0247 Inrcore, Llc Div Inrcore (USA)
Related Parts
6625-00-050-6689INTERCHANGEABLE
VOLTMETER
1220-3
5133-00-189-9248INTERCHANGEABLE
DRILL,TWIST
5330-00-291-7742INTERCHANGEABLE
SEAL,PLAIN ENCASED
12203
5330-00-297-6192INTERCHANGEABLE
SEAL,PLAIN ENCASED
33524
5340-00-353-2993INTERCHANGEABLE
BELLOWS,PROTECTION
12203
6350-00-389-4584INTERCHANGEABLE
VALVE,PILOT
N12203
4310-00-705-6933INTERCHANGEABLE
VACUUM PUMP
5975-00-877-6893INTERCHANGEABLE
BUSHING,ELECTRICAL CONDUIT
2520-01-099-1099INTERCHANGEABLE
PARTS KIT,HYDRAULIC TRANSMISSION
0014304
5950-01-100-1192INTERCHANGEABLE
TRANSFORMER,POWER
61901-010
6150-01-114-6607INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
17601
5950-01-140-1246INTERCHANGEABLE
TRANSFORMER,POWER
1220B-3

Frequently Asked Questions

What is NSN 5950-00-316-6121?

NSN 5950-00-316-6121 is a Reactor, manufactured by Standex Electronics, Inc., classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-316-6121?

NSN 5950-00-316-6121 has 3 cross-referenced part numbers: 226453-004 (Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems), 12203 (Standex Electronics, Inc.), TC0247 (Inrcore, Llc Div Inrcore).

What NSN replaces 5950-00-316-6121?

There are 12 known substitutes for 5950-00-316-6121: 6625-00-050-6689, 5133-00-189-9248, 5330-00-291-7742 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12203?

Key specifications for 12203: DC Resistance Rating in Ohms: 1.300 SINGLE COMPONENT SINGLE WINDING; Winding Quantity: 1 SINGLE COMPONENT; Inductance Rating: 3.70 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING; Inductance Type: FIXED. 11 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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