PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

123-309Coil,radio Frequency

Avionics Specialties, Inc. · NSN 5950-00-147-4303 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-147-4303 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-147-4303. Primary manufacturer part number: 123-309.
Features
  • Coil,radio Frequency — FSC 5950
  • Body Outside Diameter: 0.640 INCHES MAXIMUM IN
  • Terminal Type and Quantity: 2 WIRE LEAD
  • Inductance Rating: 4.00 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
  • Reliability Indicator: NOT ESTABLISHED
  • Body Length: 0.360 INCHES MAXIMUM IN
  • Rating Method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING
  • Winding Operating Current: 2.0 AMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coil,radio Frequency, cataloged under National Stock Number 5950-00-147-4303, 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 Avionics Specialties, Inc.. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 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
NSN5950-00-147-4303
Primary Part Number123-309
Item NameCoil,radio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerAvionics Specialties, Inc.
StatusACTIVE
Body Outside Diameter0.640 INCHES MAXIMUM IN
Terminal Type and Quantity2 WIRE LEAD
Inductance Rating4.00 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
Reliability IndicatorNOT ESTABLISHED
Body Length0.360 INCHES MAXIMUM IN
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Winding Operating Current2.0 AMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Coil Form TypeSOLID SINGLE COMPONENT
DC Resistance Rating in Ohms0.840 SINGLE COMPONENT SINGLE WINDING
Inclosure TypeFULLY INCLOSED
Mounting MethodTERMINAL SINGLE GROUP
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
2940-00-203-310251104 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
5133-00-236-3414 INTERCHANGEABLE
Drill,twist
5310-00-350-013951104 INTERCHANGEABLE
Washer,key
Meritor Heavy Vehicle Systems, Llc
1680-00-408-907251104 INTERCHANGEABLE
Universal Joint,aircraft
Dressta North America Ltd
5999-00-502-9425 INTERCHANGEABLE
Contact,electrical
3110-00-761-657719280 INTERCHANGEABLE
Bearing,ball,thrust
Skf Usa Inc.
4320-01-149-48751159SCH202-1 INTERCHANGEABLE
Pump,rotary
Northrop Grumman Systems Corporation
5120-01-518-2100RM16 INTERCHANGEABLE
Mallet,rubber
Westward Corp
Cross-Reference Index
Part NumberManufacturer
TB1149 Universal Toroid Coil Winding Inc (USA)
123-309 PRIMARY Avionics Specialties, Inc. (USA)
51-104 Gowanda Holdings, Llc Div Gowanda Electronics Corp. (USA)
123B309 Avionics Specialties, Inc. (USA)
LX1076 Ems Development Corporation Dba Ems Development Corp (USA)
LX01076 Ems Development Corporation Dba Ems Development Corp (USA)
CS-8079 Coil Specialty Company, Inc. (USA)
Related Parts
2940-00-203-3102INTERCHANGEABLE
FILTER ELEMENT,FLUID
51104
5133-00-236-3414INTERCHANGEABLE
DRILL,TWIST
5310-00-350-0139INTERCHANGEABLE
WASHER,KEY
51104
1680-00-408-9072INTERCHANGEABLE
UNIVERSAL JOINT,AIRCRAFT
51104
5999-00-502-9425INTERCHANGEABLE
CONTACT,ELECTRICAL
3110-00-761-6577INTERCHANGEABLE
BEARING,BALL,THRUST
19280
4320-01-149-4875INTERCHANGEABLE
PUMP,ROTARY
1159SCH202-1
5120-01-518-2100INTERCHANGEABLE
MALLET,RUBBER
RM16

Frequently Asked Questions

What is NSN 5950-00-147-4303?

NSN 5950-00-147-4303 is a Coil,radio Frequency, manufactured by Avionics Specialties, Inc., classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-147-4303?

NSN 5950-00-147-4303 has 7 cross-referenced part numbers: TB1149 (Universal Toroid Coil Winding Inc), 123-309 (Avionics Specialties, Inc.), 51-104 (Gowanda Holdings, Llc Div Gowanda Electronics Corp.), 123B309 (Avionics Specialties, Inc.), LX1076 (Ems Development Corporation Dba Ems Development Corp) and 2 more.

What NSN replaces 5950-00-147-4303?

There are 8 known substitutes for 5950-00-147-4303: 2940-00-203-3102, 5133-00-236-3414, 5310-00-350-0139 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 123-309?

Key specifications for 123-309: Body Outside Diameter: 0.640 INCHES MAXIMUM IN; Terminal Type and Quantity: 2 WIRE LEAD; Inductance Rating: 4.00 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING; Reliability Indicator: NOT ESTABLISHED. 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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